Which of the following statements about length of investment is correct? a. bonds tend to be better long-term investments than stocks because bonds are unlikely to lose their value. b. stocks tend to be better long-term investments than bonds because bonds do not have the same growth potential that stocks do. c. bonds tend to be better long-term investments than stocks because bonds, unlike stocks, are guaranteed to keep up with inflation. d. stocks tend to be better long-term investments than bonds because stocks can be bought and sold more readily than bonds.