Assertion (A) : For the onset of wet summer monsoons of India, the south-east trade winds over Indian Ocean cross the equator and recure into a south westerly flow,Reason (R) : The north easterly surface winds of Siberian high blowing towards South Asia cause the deflection of these winds.

• A. Both (A) and (R) are individually true and (R) is the correct expiation of (A)
• B. Both (A) and (R) are individually true but (R) is the correct explanation of (A)
• C. (A) is true bur (R) is false
• D. A is false bur R is true