The Substitution Effect on Labour Supply Refers to the Degree

The substitution effect on labour supply refers to the degree to which

A) the firm can substitute other factors of production for labour.
B) buyers can substitute other products for the products that are made by organized labour.
C) labour is willing to substitute nonlabour income for wages.
D) labour prefers to substitute nonmonetary payments for money wages.
E) labour is willing to substitute work for leisure.