Credit Terms of 2/10,prox Net 30 Mean That a Cash

Credit terms of 2/10,prox net 30 mean that a cash discount of 2% can be taken if payment is made by _________________ or the full invoice must be paid by __________________ .

A) days after the invoice date,30 days after the invoice date
B) days after the invoice date,the 30th day of this calendar month
C) the 10th day of the next calendar month,30 days after the invoice date
D) the 10th day of the next calendar month,the 30th day of the next calendar month
E) days after the good are actually received,30 days after the goods are actually received