Which of the Following Statements Concerning the Supply of Labor

Which of the following statements concerning the supply of labor is true?

A) The possibility of long-term gain has no effect on labor supply decisions.
B) The only important consideration in making labor supply decisions is the acceptability of the wage rate that is offered.
C) Individuals may be willing to work for lower wages in a particular location if earning higher wages requires relocation.
D) Psychic income, or the sense of fulfillment that comes from performing a job well, is found only in professional occupations such as law, teaching, and medicine.