In $HS^–$, $I^–$, $R–NH_2, NH_3$ order of proton excepting tendency will be :-

Question

( A ) $HS^– > RNH_2 > NH_3 > I^–$
( B ) $NH_3 > R-NH_2 > HS^–> I^–$
( C ) $RNH_2 > NH_3 > HS^– > I^–$
( D ) $I^– > NH_3 > R–NH_2 > HS^–$