Refer to the exhibit.
Ephone 1 has three active calls.
The first two calls were inbound calls, which the user put on hold to place a third call outbound.
What will happen on ephone 1 when a fourth call arrives for extension 2001?
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A. B. C. D. E.E.
Because on line maximum 4 calls can be placed when user put the call on hold is consume a channel and reach the maximum number of calls on line.