Assertion(A) - There are ten valence electrons on the sulphur atom in `SF_4` molecule.
Reason(R)-The structure of `SF_4` molecule is based on a distorted trigonal bipyramid.
A. Both A and R true and R is the correct explanation of A
B. Both A and R true and R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true