For each instance below determine the amount to be paid for each invoice. Assume the returns occurred and were settled before the invoice is paid and if a discour is available that the invoice is paid within the discount period. Transportation paid by the seller will be included into the amount paid. a b d f ex C 8 =e-f h =g+b Trans- portation paid by Seller e =ad Amount Subject To Discount Merch- andise. Ret. & Allow Discount Net of Discount Amount Paid A $10,000 - B. 10,000 2,000 Terms FOB-D, 2/10, n/30 FOB-SP, 1/10, n/30 FOB-D, n/30 FOB-SP, 2/10,n/30 FOB-SP, 1/10, n/30 C. 12,000 $2,500 D. 2,500 100 900 E. 7,500 $400 500