Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : The metal carbon bond in metal carbonyls possesses both $$\sigma$$ and $$\pi$$ character.

Reason (R) : The ligand to metal bond is a $$\pi$$ bond and metal to ligand bond is a $$\sigma$$ bond.

In the light of the above statements, choose the most appropriate answer from the options given below.

The IUPAC name of the complex -

[Ag(H₂O)₂][Ag(CN)₂] is:

The order of energy absorbed which is responsible for the color of complexes

(A) [Ni(H₂O)₂(en)₂]²⁺

(B) [Ni(H₂O)₄(en)]²⁺ and

(C) [Ni(en)₃]²⁺

is