What do VoIP endpoints use to turn delay variations into a constant value so voice can be played out?

A.
Jitter buffers

B.
Serialization delay

C.
Low-latency queuing

D.
Link fragmentation and interleave

Explanation:
Delay variation (or jitter) is the difference in the end-to-end delay between packets. Each end station in a
VoIP or Video over IP conversation has a jitter buffer. Jitter buffers are used to smooth out changes in
arrivaltimes of data packets containing voice.
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