The Symbol $\Delta_{\mathrm{c}} H^{\circ}$ Conveys Which of the Following Information? Select All That Apply

The symbol $\Delta_{\mathrm{c}} H^{\circ}$ conveys which of the following information? Select all that apply.

A) Standard enthalpy change of combustion.
B) Standard enthalpy change measured at 273.15 K.
C) Enthalpy change measured at 1 bar pressure.
D) Enthalpy change measured for 1 gram of substance.