An invoice received included the following information: merchandise price, $12,000; terms 1/10, n/eom; FOB shipping point with prepaid freight of $428. Assuming that a credit for merchandise returned of $2,400 is granted prior to payment and that the invoice is paid within the discount period, what amount of cash should be paid by the buyer?

a.$9,932

b.$2,400

c.$12,000

d.$12,304