___________ command is used by the receiving server in order to verify whether the given username is valid or not.

___________ command is used by the receiving server in order to verify

1.	___________ command is used by the receiving server in order to verify whether the given username is valid or not.
A.	Verify
B.	Data
C.	Size
D.	EXPN
Answer» B. Data

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___________ command is used by the receiving server in order to verify whether the given username is valid or not.
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___________ command is used by the receiving server in order to verify whether the given username is valid or not.

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