Indian Constitution has adopted a system of Checks and Balance for smooth functioning of the three organs of the government. Which of the following are the instruments of parliamentary control over the executive?

Indian Constitution has adopted a system of Checks and Balance for smooth functioning of the three organs of the government. Which of the following are the instruments of parliamentary control over the executive?
1. No Confidence Motion
2. Both Zero Hour and Half-an-hour discussion
3. Comptroller and Auditor General
4. Public Accounts Committee
5. Emergency provisions

Select the correct code.
  a) 2, 3, 4 and 5 Only
  b) 1, 2 and 3 Only
  c) 1, 2, and 4 Only
  d) 1, 2, 3, 4 and 5