Suppose an individual spends all his income on only two goods, good X and good Y. Moreover, suppose that you were asked to derive his price...

Suppose an individual spends all his income on only two goods, good X and good Y. Moreover,

suppose that you were asked to derive his price consumption curve for good Y. Which of the

following would be allowed to vary?

a. Money income.

b. The tastes of the consumer.

c. The price of good X.

d. The price good Y.