Maxwell's relation corresponding to the identity, dH = dS = Vd_p + Σμ_i dn_i is

A. (∂T/∂V)_{S, ni} = -(∂P/∂S)_{V, ni}

B. (∂S/∂P)_{T, ni} = (∂V/∂T)_{P, ni}

C. (∂S/∂V)_{T, ni} = (∂P/∂T)_{V, ni}

D. (∂T/∂P)_{S, ni} = (∂V/∂S)_{P, ni}