Draw indifference curves to represent the following types of consumer preferences:
a. I like both peanut butter and jelly and always get the same additional satisfaction from an ounce of peanut butter as I do from 2 ounces of jelly.
b. I like peanut butter but neither like or dislike jelly
c. I like peanut butter but dislike jelly
d. I like peanut butter and jelly but I only want 2 ounces of peanut butter for every ounce of jelly.