Which two types of goods are rival in consumption?

Suppose Raul has budgeted $100 of his monthly income towards two good: t-shirts and jeans. If the price of a pair of jeans is $20 and last month he spent his $100 on a bundle containing 2 pairs of jeans and 12 t-shirts, which of the following is another point on Raul's budget line?

a. 3 pairs of jeans and 16 t-shirts b. 1 pair of jeans and 15 t-shirts c. 3 pairs of jeans and 6 t-shirts d. 0 pairs of jeans and 20 t-shirts

Figure 11-2 ? Using the information in Figure 11-2, which point or points represents an inefficient allocation of resources?

A. A B. B C. A and D D. D