Which of the following statements regarding DSCP bits are TRUE?

The three most significant (first) bits define 8 forwarding classes.

The three least significant (last) bits of the DSCP specify the drop probability.

The full 8 bits of the TOS field are used for DSCP.

To convert DSCP to IP precedence, the three most significant (first) bits are matched.

DSCP provides for eight drop probabilities.