13. Suppose Mike has a linear PPC in the production of potatoes and tomatoes. If Mike devotes all his time to the production of potatoes, he can produce 1,000 pounds of potatoes a year; if he devotes all his time to the production of tomatoes, he can produce 2,000 pounds of tomatoes a year. Which of the following combinations of potatoes and tomatoes are feasible for Mike in a year? a. 1,000 pounds of potatoes and 2,000 pounds of tomatoes b. 1,000 pounds of potatoes and 100 pounds of tomatoes c. 100 pounds of potatoes and 2,000 pounds of tomatoes d. 500 pounds of potatoes and 1,200 pounds of tomatoes e. 500 pounds of potatoes and 1.000 pounds of tomatoes