What should the administrator use to deliver this requirement?

At cloud kicks sales reps use discounts on the opportunity record to help win sales on products. When an opportunity is won, they then have to manually apply the discount up the related opportunity products. The sales manager has asked if three is a way to automate this time consuming task.

What should the administrator use to deliver this requirement?
A . Flow Builder
B . Approval Process
C . Prebuild Macro.
D . Formula field

Answer: A