Earnings differentials cannot be explained at all by differences in productivity

You purchase a pizza oven that is expected to last 10 years for $15,000. How do you account for the economic cost of the oven?

A) Expense the oven, taking a write-off for the entire price in the first year. B) Amortize the cost over the 10 year life of the oven, resulting in a cost of $1,500 per year. C) Calculate the value of renting the oven to someone else and use that as your cost. D) The cost is the price of the oven minus any revenue made selling pizzas made in the oven.

Many people tend to buy multiple cars from the same manufacturer because

A) doing so reduces the asymmetric information problem; consumers have better knowledge of quality. B) doing so reduces the asymmetric information problem; consumers have better knowledge of prices. C) doing so doesn't change the asymmetric information problem but consumers have more information. D) doing so increases the consumers brand loyalty.