Answer:
It would be option B
Explanation:
They would save more money taking 30% off of the total of three then 10% off of each one.
For example:
If each pizza cost 10$
10% would mean 1 dollar off each pizza meaning three dollars saved in total.
If we did 3 pizzas for 30% off the original price with no discount is 30$ and with the discount is 21$.
That means you would save 9$ doing the 3 for 30% off.
Hope this helps