What is the minimum bandwidth required to support an uncompressed telephony call at the standard sampling rate and sample size?

What is the minimum bandwidth required to support an uncompressed telephony call at the standard sampling rate and sample size?

A.
16 kbps

B.
32 kbps

C.
48 kbps

D.
64 kbps

E.
80 kbps

F.
96 kbps