Final answer:
Class B shares typically have a back-end load where investors pay a fee when they sell their shares. This fee decreases over time and might be suitable for long-term investors.
Step-by-step explanation:
Class B shares typically have a back-end load, which means that investors pay a fee when they sell their shares. This fee is usually a percentage of the amount invested.
Investing in Class B shares might be appropriate for investors who intend to hold their investment for a long time and don't require immediate access to their funds. This is because the back-end load decreases over time and eventually reaches zero after a certain period.