According to the efficient markets hypothesis, stocks follow a random walk so that stocks that increase in price one year are more likely to increase than decrease in the next year

If marginal utility is positive but diminishing, as more units of a good are consumed, then the total utility from the good must be

A) falling. B) positive and rising at an increasing rate. C) positive and rising at a decreasing rate. D) positive and rising at any rate.

In the short-run, a firm's decision to shut-down should not include

a. Avoidable costs b. Variable costs c. Fixed costs d. Marginal costs