【单选题】Wilbur consumes only apples and bananas. He prefers more apples to less, but he gets tired of bananas. If he consumes fewer than 18 bananas per week, he thinks that one banana is a perfect substitute ...
【单选题】Manuel consumes only apples and bananas. He prefers more apples to less, but he gets tired of bananas. If he consumes fewer than 17 bananas per week, he thinks that one banana is a perfect substitute ...