Which One of the Following Statements Is Correct Concerning the Credit

Which one of the following statements is correct concerning the credit period?

A) The credit period begins when the discount period ends.
B) The discount period is the length of time granted to a customer to pay their bill.
C) The credit period begins on the invoice date.
D) With terms of 2/10, net 20, the credit period is 10 days.
E) With EOM dating, all sales are assumed to have occurred on the 15^thof each month.