If `H_(2)` molecule is acting as ligand via oxidate addition :
`[Ir^(I)(CO)ClL_(2)] ("Vaska's complex")+H_(2) to [Ir^(III)(CO)Cl(H_(2))L_(2)],L=PPh_(3)`
then, choose the correct statement about the `H_(2)` molecule fate before and after reaction .

Options

A. `{:("Before"," Trasition State","After"),(B.O=1,1 sigma"-donor,"sigma(**)-"acceptor",B.O.=0):}`
B. `{:("Before"," Trasition State","After"),(B.O=1,1 sigma"-donor,"sigma(**)-"acceptor",B.O.=1):}`
C. `{:("Before"," Trasition State","After"),(B.O=1,1 sigma"-donor,"pi(**)-"acceptor",B.O.=0):}`
D. `{:("Before", "Trasition State","After"),(B.O=1,1 sigma^(**)"-donor,"sigma-"acceptor",B.O.=0):}`

Answer

A

Explanation