Question no 1005 : Calculate available capacity for work center

In PM, a work center contains the following, and please calculate the available capacity ?

Start time : 09:00
Finish time : 18:00
Length of break : 01:30
Capacity Utilization: 90
No. of individual capacity : 5

(only one answer)

A)     33
B)      22.75
C)      33.75
D)      12.75
E)       34
.