A pair of shoes that normally sells for $85.00 goes on sale for 35% off.

Sean thinks that the sale price should be $50.00 but Melanie disagrees and says the price should be $55.25. Aiyanna says they are both wrong and decides the price should be $29.75.

Who is correct and why?
a. Melanie is correct.
b. Sean is correct.
c. Aiyanna is correct.