Kanya has a credit card that gives a 6% discount on every purchase and free shipping when used online. The annual percentage rate on the credit card is 12%. Kanya wants to buy a laptop that costs $420. Which statement about the cost of the laptop is true? A. If Kanya uses the credit card and pays the full balance during the billing cycle, she will spend $25.20 more than paying cash for the laptop.
B. If Kanya uses the credit card and pays the full balance during the billing cycle, she will spend $50.40 more than paying cash for the laptop.
C. If Kanya uses the credit card and pays the full balance during the billing cycle, she will spend $50.40 less than paying cash for the laptop.
D. If Kanya uses the credit card and pays the full balance during the billing cycle, she will spend $25.20 less than paying cash for the laptop.

Now, I know that the answer to this question can be found on this website, but I don't know how you got the answer in the first place. Maybe someone has explained it before but I haven't seen it yet.