Which of the following are the major factors responsible for the monsoon type of climate in India?
1. Location 2. Thermal contrast 3. Upper air circulation 4. The Himalayan Mountains
Select the correct answer using the code given below.

Options

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