Communication Systems - Engineering

Q1:

Some sources of TV programs are
  1. TV camera
  2. Telecine
  3. VTR
  4. External signal
Which of the above are actually present in a TV studio?

A 1, 2, 3 and 4

B 1, 2, 3

C 1 and 3

D 1 2 and 4

ANS:A - 1, 2, 3 and 4

All these are present.