7. Given the following information, calculate, in order, the amount credited and the outstanding balance.
Invoice: $1,000
Terms: 3/10, n/30
Invoice date: May 5
Payment amount: $800
Date paid: May 9
A. $265 26: $624 74
B. $176 00, $824 00
C. $824.74 $175.26
D. $724.74 $275 26