Assertion (A) : There are two spherical nodes in `3s` orbital
Reason (R ) : There is no planar nodes in `3s` orbital.
A. If (A) and (R) are both correct and (R) is the correct reason for (A).
B. If (A) and (R) are both correct but (R) is not the correct reason for (A).
C. If (A) is true but (R) is false.
D. If both (A) and (R) false.