A Buyer Has $20 to Spend on Rice and Beans

Multiple Choice

A buyer has $20 to spend on rice and beans.Rice costs $2 and beans cost $3 per pound.The buyer is buying the combination of 4 pounds of rice and 4 pounds of beans.At this combination,her marginal benefit from rice is $14 and her marginal benefit from beans is $18.This buyer should ________.

A) buy less beans and more rice
B) buy more rice and less beans
C) buy more of both rice and beans
D) not change his consumption