Answer:
A. Capital loss.
B. Capital loss = 2.69%
Explanation:
We have been given that Alcoa bought 50 shares at $10.02 yesterday. Today the share is at $9.75.
Let us find change in share's value.
![\text{Change in share's value }=\text{Final value-Initial value}](https://img.qammunity.org/2020/formulas/mathematics/high-school/yz4lssm3qv8p1mbzuapwnysrthqwx8wn9a.png)
![\text{Change in share's value }=\$9.75-10.02](https://img.qammunity.org/2020/formulas/mathematics/high-school/2kam6c6s4qwora8mksr62sko8jxo2dhlwv.png)
![\text{Change in share's value }=-\$0.27](https://img.qammunity.org/2020/formulas/mathematics/high-school/9xq31j3w907zc1ikd80lufd3lzmi50jjb8.png)
Since the value of share decreased $0.27, therefore, we will have a capital loss.
Let us find the purchase price and revenue generated from selling 50 shares.
![\text{Purchasing cost of 50 shares}=50* 10.02](https://img.qammunity.org/2020/formulas/mathematics/high-school/zrssahenmv57brzwd8dj34xds31z84a2mc.png)
![\text{Purchasing cost of 50 shares}=501](https://img.qammunity.org/2020/formulas/mathematics/high-school/vxrxgjsmw97i93ewrkydkm8yiqis92g5n8.png)
So the purchasing cost of 50 shares will be $501.
![\text{Revenue generated from selling 50 shares}=50* 9.75](https://img.qammunity.org/2020/formulas/mathematics/high-school/ds89xughkn4jdgntkty16wcocherasfiqu.png)
![\text{Revenue generated from selling 50 shares}=487.5](https://img.qammunity.org/2020/formulas/mathematics/high-school/5jt11jaml8g1jf9g5bhmqawq8t4egmewep.png)
So, after selling our 50 shares we will get $487.5.
We will use percentage change formula to find our loss percent.
![\text{Percentage change}=\frac{\text{Final value - Original value}}{\text{Original value}}* 100](https://img.qammunity.org/2020/formulas/mathematics/high-school/vga8hg2vw3x85hvvooccsocvwfz1n1wm5h.png)
![\text{Percentage change}=(487.5-501)/(501)* 100](https://img.qammunity.org/2020/formulas/mathematics/high-school/fmnyzh1k0s78ohqhbsu3njsr6yn00l2738.png)
![\text{Percentage change}=(-13.5)/(501)* 100](https://img.qammunity.org/2020/formulas/mathematics/high-school/kf3x5tyla5sj8e9xae6ixl5fezqgsn7kcw.png)
![\text{Percentage change}=-0.0269461* 100](https://img.qammunity.org/2020/formulas/mathematics/high-school/84rgeq2s2ubn50oq7elmz0olbl4rcmh2ly.png)
![\text{Percentage change}=-02.69461\%](https://img.qammunity.org/2020/formulas/mathematics/high-school/gnu7xz3tscgmvr5z5vqz6mrv8cilp4gftu.png)
As we are getting a negative percentage, therefore, we have a capital loss of 2.69%.