C-06-Q028mediumsingle_mcqSTP refers to—a0 ∘C0\,^{\circ}\mathrm{C}0∘C and 1 atmb25 ∘C25\,^{\circ}\mathrm{C}25∘C and 1 atmc100 ∘C100\,^{\circ}\mathrm{C}100∘C and 1 atmd0 ∘C0\,^{\circ}\mathrm{C}0∘C and 2 atm