The Rational Rule for Workers Is to Work

The Rational Rule for Workers is to work

A) one more hour as long as the wage is at least as large as the marginal benefit of another hour of leisure.
B) as long as there is a desire for more income that exceeds the loss of income from not working.
C) as long as the marginal cost exceeds the marginal benefit.
D) one more hour as long as the wage exceeds the cost of necessities.