Your local bakery gives you information on consumer purchasing habits for muffins and cupcakes. It tells you that, when the price of a muffin is $1, people buy 55 cupcakes. When the price of a muffin is raised to $2, cupcake purchases go up to 65 cupcakes. The cross-price elasticity of demand is: Select one: a. 0.50. b. 4.00. c. 0.25. d. 0.67. e.