Guardian Company sold merchandise to customer A, who charged the $2,500 sales amount on the credit card. The credit card company charges a 1% credit card fee.

Guardian Company sold merchandise to customer B for $4,000 terms 2/10, n/15. Customer B paid the amount due in 8 days.

Guardian Company sold merchandise to customer C for $6,600 terms 3/10, n/30. Customer C returned merchandise worth $1,000 and paid the remaining balance in 20 days.

What is the company's net sales resulting from these transactions?

a) $12,100

b) $13,100

c) $12,020

d) $11,995

e) $12,075