Maria has to spend 5 1/2 hours to finish her community service program in a community health clinic. Last week she was able to spend 3 3/4 hours. Which equation can be used to determine the number of hours h that Maria still needs to spend to complete her service program?

A. h-5 1/2= 3 3/4
B. h-3 3/4= 5 1/2
C. h+5 1/2= 3 3/4
D. h+3 3/4= 5 1/2