Monica's Closet Received Payment in Full Within the Discount Period

Monica's Closet received payment in full within the discount period for goods sold on a $1,000 sales invoice, terms 2/10, n/30. Which entry records this payment? (Round your calculations to the nearest whole dollar.)

A) Debit Accounts Receivable $1,000; credit Sales $1,000
B) Debit Cash $1,000; credit Accounts Receivable $1,000
C) Debit Cash $980, debit Sales Discount $20; credit Sales $1,000
D) Debit Cash $980, debit Sales Discount $20; credit Accounts Receivable $1,000