The producer will become more profitable by selling corn The producer must shift out of the more expensive input, corn, and use more of the less expensive input, milo The producer must shift out of the less expensive input, milo, and use more of the more expensive input, corn The producer must shut down Solution Ans. Option b is the correct answer. The producer must shift out of the more expensive input, corn,and use more of the less expensive input, milo. Explanation: As the producer has to maintain the same level of output and the goods are substitute, the producer will substitute the less expensive input milo for the more expensive input corn. If a producer is able to substitute less expensive input for more expensive input, it indicates more efficient production technique. .