What Is the Estimated Labor Budget for a 40-Week Project

What is the estimated labor budget for a 40-week project with the following staffing?
Personnel - Hourly Billing Rate - Hours per Week
Principal --- $185 --- 2
Resident Engineer --- $125 --- 32
Inspector --- $80 --- 40
Administrative Assistant --- $45 --- 10

A) $17,400
B) $151,700
C) $320,800
D) $696,000