Consider the following statements:
1. In the absence of Speaker, the Chairman of Rajya Sabha presides over the joint sitting.
2. Deputy speaker is responsible to the Speaker.
3. Chairman of Rajya Sabha can exercise a casting vote in case of a tie.
1) only 1 is correct
2) only 2 is correct
3) only 3 is correct
4) None of the above is correct
3) only 3 is correct