How must they be compensated?

Flawless Flower Shops accepts payments for flowers and local delivery from customers anywhere in the United States. The employees of Flawless typically work 6 days a week.

How must they be compensated?
A . Overtime must be paid on a daily basis
B. Compensatory pay is allowed for hours over 80 in a biweekly pay period
C. Overtime is due for hours worked over 40 in a workweek
D. Double time is required for work on holidays

Answer: C