Money market funds not only have the convenience of current savings, but also have incomparable benefits from current savings. Investors can not only get the income from the portfolio of money market instruments, but also issue checks accordingly, which is quite flexible and liquid.

At the end of 1970s, due to inflation for several years, the market interest rate soared, and the money market instruments were much higher than the upper limit of the interest rate of savings deposits. The total assets of money market funds have expanded rapidly because savings customers keep withdrawing money from their deposits and investing in money market funds with higher returns.

American money market funds are committed to maintaining a stable fund net value and providing good liquidity.

Money market instruments adopt floating interest rates. Therefore, item D is wrong.