Assertion (A): The frequency of floods in North Indian plains has increased during the last couple of decades. Reason (R): There has been reduction in the depth of river valleys due to deposition of silt.
Options
(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 a correct explanation of A
(c)A is true, but R is false
(d)A is false, but R is true
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