Assertion (A): `Be(OH)_(2)` is soluble in `NaOH`.
Reason (R ): `Be(OH)_(2)` is amphoteric in nature.
A. If both `(A)` and `(R )` are correct and `(R )` is the correct explanation of `(A)`.
B. If both `(A)` and `(R )` are correct, but `(R )` is not the correct explanation of `(A)`.
C. If `(A)` is correct, but `(R )` is incorrect.
D. If `(A)` is incrrect, but `(R )` is correct.