Amy needs to run a total of 8 1/4 miles at the cross country meet today. So far Amy ran 3/4 miles and 1 2/3 miles during the first 20 minutes, how many more miles does she need to run in order to complete the race?

A. 5 5/6 mi
B. 6 mi
C. 6 2/3 mi
D. 7 1/4 mi