Consider the Above Figure

Consider the above figure.If the wage rate is initially $8 per hour and subsequently increases to $12 per hour,then

A) the income effect dominates and optimal hours of work increase by 3 hours.
B) the income effect dominates and optimal hours of work decrease by 3 hours.
C) the substitution effect dominates and optimal hours of work increase by 3 hours.
D) the substitution effect dominates and optimal hours of work decrease by 3 hours.