Arrange the following nucleophiles in the order of the nucleophilicity in protic solvents $SH^-,OAC^-,PHO^-,OH^-,H_2O$

Question

(a) $SH^->OH^->H_2O>OAC^->PHO^-$

(b) $SH^->OH^->PHO^->OAC^->H_2O$

(c) $SH^->OH^->H_2O>PHO^->OAC^-$

(d) $SH^->OH^->ACO^->H_2O>PHO^-$