The question consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses:
Assertion: The complex `[Cr(SCN)(NH_3)_5]Cl_2` is linkage isomeric with `[Cr(NCS)(NH_3)_5]Cl_2`.
Reason: `SCN^(-)` is an ambident ligand in which there are two possible coordination sites.
A. (a) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. (b) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. (c) If assertion is true but reason is false.
D. (d) If assertion is false but reason is true.