Arrange the following nucleophiles in the decreasing order of their nucleophilicity NH2, NH3, C2H5-NH2, CoHs-NH, A) NHz > NH3> C2Hs-NH,> CoH-NH, B) NH; > C,Hs-NH,> NH3 > CoH-NH, C) NH; > NH3> CoHo-NH, > C,H5-NH, D) NH; >C,Hs-NH,> CoHs-NH, > NH3