Missing question: A. C(s) + 2S(s) → CS2(l) + 89.4 kJ. B. C(s) + 2S(s) + 89.4 kJ → CS2(l). C. C(s) + 2S(s) + 89.4 kJ → CS2(l) + 89.4 kJ. D. C(s) + 2S(s) → CS2(l). Because enthalpy of
the system is greater that zero, this is endothermic reaction (<span>chemical reaction that
absorbs more energy than it releases)</span>, heat is included as a reactant.