Credit Terms of 2/10, N/30 Mean That

Multiple Choice

Credit terms of 2/10, n/30 mean that

A) 2% discount is allowed if the bill is paid within 10 days, or the entire amount is due within 30 days.
B) a discount is allowed if the bill is paid within 30 days.
C) a discount is allowed if the bill is paid after 10 days.
D) a 2% discount is allowed if the customer pays the bill within 30 days.