单项选择题

A.end-to-end delayB.interference from bulk data traffic……

A stream of voice packets transmitted over a WAN network encounters differing queuing delays. One router in the path used by the voice packets delays some of the packets for 4 ms while transmitting a large video file， but delays other packets only 2 ms. Another router delays some packets 5 ms， but transmits others in 2 ms. How would you best describe this type of problem？（）

A.end-to-end delay
B.interference from bulk data traffic
C.processing delays
D.serialization delays
E.jitter

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