When identifying Cisco TelePresence Endpoint traffic characteristics, which three statements are true?

A.	Latency, jitter, and loss are measured in a round-trip fashion.
B.	Latency, jitter, and loss are measured unidirectionally.
C.	Latency and loss are measured at a packet level, based on RTP header sequence numbers and time stamps.
D.	Latency and jitter are measured at a packet level, based on RTP header sequence numbers and time stamps.
E.	Jitter is measured at a video frame level, by measuring the arrival time of the video frame versus the expected arrival time.
F.	Jitter is measured at a packet level, by measuring the arrival time of the packet versus the expected arrival time.