Assertion (Z): The central Asom valley lies in rain shadow area<br> Reason (R): The central Asom valley receives less rainfall (163.7 c.m. annual) in comparison to Cherapunji (1141.9 cm.)

A) Both Z and R are true and R is thecorrect explanation of Z B) Both Z and R are true but R is not thecorrect explanation of Z C) A is true but R is false D) Z is false but R is true