Answer:
C. a $10,000 decrease.
Step-by-step explanation:
Calculation for what the effect on income would be
First step is to calculate Make
Make=$100,000 + $160,000 + $60,000
Make = $320,000
Second step is to calculate Buy
Buy= $20,000 × $17 = $340,000 – $10,000
Buy = $330,000
Now let calculate the effect on income
Effect on income = $320,000 – $330,00
Effect on income = –$10,000 decrease
Therefore the effect on income would be –$10,000 decrease