Assertion : Kepler's second law can be understood by conservation of angular momentum principle.
Reason : Kepler's second law is related with areal velocity which can further be proved to be based on conservation of angular momentum as (dA/dt) = (r2ω)/2
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not correct explanation of A
(c) A is true but R is false
(d) A and R are false