Which two clock rates does Performance Monitor use to calculate RTP jitter values?

Which two clock rates does Performance Monitor use to calculate RTP jitter values? (Choose two.)

A.
PCMU (G.711 mu-law) , 8000 Hz

B.
PCMU (G.711 mu-law) , 32000 Hz

C.
PCMA (G.711 A-law) , 16000 Hz

D.
H.263 , 90,000 Hz

E.
H.263 , 64,000 Hz