What is zapping in the parlance of TV operations?

A. The viewer/recorder switches off the VCR/Digital recorder when the ads are being broadcast on TV, but he records the movie when it is broadcast. Thus, he skips ads during the recording

B. The viewer/recorder records the broadcast for some period, say two hours

C. The viewer/recorder records programmes of one channel and excludes all other channels

D. None of these

Answer: Option A