Which of the following describes a situation in which there would be decreasing marginal utility?

A. Buying food in bulk to save money in the long run.
B. Buying normal goods as substitutes for inferior goods,
C. Buying luxury items that you cannot afford.
D. Buying a new car when you already have two cars.

After jeff bezos read about how the internet was growing by 2,000 percent a month, he set out to use the internet as a new distribution channel and founded amazon, which is now the world's largest online retailer. this is clearly an example of a(n)a. firm that uses closed innovation. b. entrepreneur who commercialized invention into an innovation. c. business that entered the industry during its maturity stage. d. exception to the long tail business model