Assertion(A) - Silicon tetrafluoride. `SiF_4` is non polar even though fluorine is much more electronegative than silicon.
Reason(R)-The four bond dipoles cancel one another in `SiF_4`.
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