Final answer:
Class A shares typically impose a front-end sales charge and have a low or no 12b-1 fee. Class C shares typically impose a 12b-1 fee or a contingent deferred sales charge.
Step-by-step explanation:
Class A shares of mutual funds typically impose a front-end sales charge and have a low or no 12b-1 fee. Class A shares are designed for long-term investors who want to minimize ongoing expenses. On the other hand, Class C shares typically impose a 12b-1 fee or a contingent deferred sales charge. This fee is used to compensate brokers and financial advisers who sell the mutual fund.