Which statement is NOT a key QoS recommended requirement for voice bearer traffic?

Which statement is NOT a key QoS recommended requirement for voice bearer traffic?

A.
Voice traffic should be marked to DSCP EF per the QoS baseline and RFC3246.

B.
Voice traffic loss should be no more than 3%.

C.
One-way latency (mouth-to-ear) should be less than 150 msec.

D.
Average one way jitter should be targeted to less than 30 msec.

E.
21-320 Kbps of guaranteed priority bandwidth is required per call depending on sample rate, codec, and layer 2 overhead.