An increase in which of the following will increase the value of the spending multiplier?

At what level of output will average total cost increase?

a. when marginal cost is greater than average total cost b. when marginal cost is lower than average variable cost c. when marginal cost equals average variable cost d. when marginal cost equals average total cost

In the figure above, the deadweight loss is

A) $4,000 an hour. B) $2,000 an hour. C) $1,000 an hour. D) $5,000 an hour. E) zero.