B two levels. When purchasing a monetary fund, filling in Grade A or Grade B is not affected; /kloc-below 0/00000 is Grade A, and/kloc-above 0/00000 is Grade B. The fund company will automatically upgrade or downgrade according to the share holding in the customer's account.

The sales service fee of the B-level fund share is less than that of the A-level fund, and all expenses have been deducted from the published income. Because the B-level deducted expenses are less, the relative income is higher.