Central planning is an efficient method for making coordination decisions

If the efficient market hypothesis is correct, then

a. index funds should typically beat managed funds, and usually do. b. index fund should typically beat managed funds, but usually do not. c. mutual funds should typically beat index funds, and usually do. d. mutual funds should typically beat index funds, but usually do not.

As society approaches total pollution abatement

A) the marginal benefit to society declines. B) the marginal benefit to society increases. C) the marginal benefit to society increases, but at a decreasing rate. D) the marginal cost to society declines.