The expression 0.70 (P-40) +0.2P represents the final price of a sofa after two discounts were taken and a delivery fee. The delivery fee is added to the discounted price after the first two discounts. The variable P represents the price of the sofa before discounts and fees are applied. Which statements are true?
Select each correct answer.
A.) The price of the sofa was first reduced by $40.
B.) The delivery fee was 30% of the original price.
C.) The price of the sofa was first reduced by 30%.
D.) The delivery fee was 20% of the original price.