what value is voice traffic marked as on a Cisco Catalyst Switch?

By default, what value is voice traffic marked as on a Cisco Catalyst Switch?

A.
DSCP EF value 46, Cos 5.

B.
DSCP EF value 46, Cos 7.

C.
DSCP CAS6 value 21, Cos 3.

D.
DSCP AF21, Cos 5.