If the Efficient Market Hypothesis is true, it means that:

Select one:

a. Investors should buy mutual funds because its the easiest way to be diversified.

b. Investors should choose their portfolios carefully in order to ensure that they contain only good assets.

c. Investors should not bother trying to find positive NPV investments in well-organized markets because they all will have already been found.

d. Investors can earn a profit by "day trading" because the market may over- or underreact to new information.