Question: In some VPN systems, a sender adds a random number of zero bits to a datagram before encrypting, and the receiver discards the extra bits

In some VPN systems, a sender adds a random number of zero bits to a datagram before encrypting, and the receiver discards the extra bits after the datagram has been decrypted. Thus, the only effect of the random padding is to make the length of the encrypted datagram independent of the length of the unencrypted version. Why is datagram length important?

A.	An observer may be able to deduce the packet payload

B.	The length of the datagram is NOT important as the datagram is encrypted

C.	The longer the datagram the more transmission costs increase

D.	The ultimate length of the datagram is maintained at 32-bytes

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Did the person take the initiative to understand the issue and gather needed information?

Was the person thoughtful about the alternatives, and did he or she make a reasonable and appropriate choice given the information available?

Is the person willing to deal with the consequences?