Which of the following statements best describes the operation of a synchronous up-/down-counter?

[A].	The counter can count in either direction, but must continue in that direction once started.
[B].	The counter can be reversed, but must be reset before counting in the other direction.
[C].	In general, the counter can be reversed at any point in its counting sequence.
[D].	The count sequence cannot be reversed, once it has begun, without first resetting the counter to zero.

Answer: Option C

Explanation:

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