Which of the Following Are Commonly Thought to Be Bad

Multiple Choice

Which of the following are commonly thought to be bad general investment guidelines? I) Don't try to outguess the market, buying and holding generally pays off.
III. Investments should be highly concentrated in your company's stock.
IV. 401K money is best placed in money market accounts because risk is very low.
V. Investments should be allocated to stocks, bonds, and money-market funds.

A) I, III, and IV
B) I, II, and IV
C) II, IV, and V
D) III and IV