What is according to David Easton, the correct sequence of the following regulatory mechanisms?
1. Socio-cultural norms
2. Communication channels
3. Gate-keeping at the boundary
4. Reduction processes
Select the correct answer from the options given below:

A. 1 and 2 B. 2 and 3 C. 1 and 4 D. 2 and 4

A. Conduct of election to Parliament, State Legislatures, President and Vice-President B. Preparation of electoral rolls C. Counting of votes and declaration of results D. Declaring an election void

A. Appropriation Committee B. Committee of Ways and Means C. Committee of Supply D. Estimates Committee

A. Lal Bahadur Shastri B. Indira Gandhi C. Rajiv Gandhi D. V. P. Singh