Assertion: Both Be and Al can form complexes such as BeF₄^2- and AlF₆^3- respectively, BeF₆^3- 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 Reason is the correct explanation of Assertion.

(b) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.

(c) If Assertion is correct but Reason is incorrect.

(d) If both the Assertion and Reason are incorrect.