A man walks at the rate of 3 km/hr. Rain appears to him falling in vertical direction at the rate of 3√3 km/hr. Which of the following options is correct regarding the actual velocity of rain?
A. 6 km/hr, inclined at an angle of 30∘ to the vertical towards the man's motion.
B. 3 km/hr, inclined at an angle of 30∘ to the vertical towards the man's motion.
C. 6 km/hr, inclined at an angle of 45∘ to the vertical towards the man's motion.
D. 6 km/hr, inclined at an angle of 60∘ to the vertical towards the man's motion.
