The correct option is D all of these
Wilkinson's catalyst is a coordination complex of rhodium with the formula of RhCl(PPh3)3. Its common name is chloridotris (triphenyl phosphane) rhodium (I). It is a homogeneous catalyst, red brown coloured solid that is soluble in hydrocarbon solvents. It is used as a catalyst for hydrogenation of alkenes and alkynes.