An Employee Who Earns a Base Rate of $10 an Hour

An employee who earns a base rate of $10 an hour and receives a weekly attendance award of $20 works 50 hours this week (Overtime pay is required,whether or not the employer specifically asked or expected the employee to work more than 40 hours) .His/her total compensation for the week will be:

A) $550.00.
B) $557.50.
C) $570.00.
D) $577.50.
E) $505.00.