Which of the following statements about DSCP is true?
A . The IP precedence and DSCP have no overlapping fields.
B . The DSCP contains class selectors for backward compatibility with the IP precedence.
C . The DSCP is exactly the same as IP precedence; the name change is merely a marketing convention.
D . The last 2 bits of the DSCP overlap with the IP precedence.
E . DSCP is only for TCP; IP precedence is for UD
Answer: B