Refer to the Following Diagram

refer to the following diagram:

-Suppose this worker's union negotiates an increase in the straight-time wage from $8 to $9.33 per hour with no bonus for overtime.This plan would allow earnings of $560 at 60 hours per week.Assuming this worker can freely choose the number of hours worked,he will choose to work:

A) 60 hours per week
B) fewer than 60 hours per week
C) more than 60 hours per week
D) more than 60 hours per week if the income effect dominates; less otherwise