For the reaction $x + y \rightarrow z$,the process is spontaneous at room temperature,and the reverse reaction is spontaneous at high temperature. Which of the following is true?
- A$\Delta H > 0, \Delta S < 0$
- B$\Delta H < 0, \Delta S > 0$
- C$\Delta H = 0, \Delta S = 0$
- D$\Delta H < 0, \Delta S < 0$
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