Assertion : Both $Be$ and $Al$ can form complexes such as $BeF_4^{2-}$ and $AlF_6^{3-}$ respectively, $BeF_6^{3-}$ is not formed.
Reason : In case of $Be$, no vacant $d-$ orbitals are present in its outermost shell.

• A

  If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

• B

  If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

• C

  If the Assertion is correct but Reason is incorrect.

• D

  If both the Assertion and Reason are incorrect.