Assertion (A) : Lanthanides and Actinides are called as Inner  Transition Elements.
Reason (R) : They are the part of Transition Elements.

Options

A. `1`. Both `A` and `R` are correct but `R` is correct explanation of 'A'
B. `2`. Both `A` and `R` are correct but `R` is not correct explanation of 'A'
C. `3`. `A` is correct but `R` is wrong
D. `4`. `A` is wrong but `R` is correct