A customer is interested in buying a pair of tennis shoes from Megashop's , an online retailer , on June 1 , 2020 , for $ 112 . The customer took advantage of a special offer , allowing for a purchase of a second pair of shoes at half price . The customer purchased and paid for both pairs of shoes with a credit card for a total of $ 168 . Shipping was paid by Megashop's ( FOB destination ) and the shoes were expected to arrive at the customer's home on June 4 , 2020. The standalone selling price of each pair of shoes was $ 112 . What is the transaction price of the contract ?

A)168

B)280

C)224

D)126