Which of the following is/are basically meant to be deployed in the northern borders of India for monitoring the borders and also to stop smuggling and illegal immigration ?
1. Assam Rifles 2. Border Security Force 3. Indo Tibet Border Police 4. National Security Guards
Select the correct answer using the code given below:

Options

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