Which one of the following pairs of equations describes an irreversibl

1.	Which one of the following pairs of equations describes an irreversible heat engine?
A.	<table><tr><td rowspan="2">&conint; Q > 0 and &conint;</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center> Q</center></td><td rowspan="2">< 0</td></tr><td align="center">T</td></table>
B.	<table><tr><td rowspan="2">&conint; Q < 0 and &conint;</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center> Q</center></td><td rowspan="2">< 0</td></tr><td align="center">T</td></table>
C.	<table><tr><td rowspan="2">&conint; Q > 0 and &conint;</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center> Q</center></td><td rowspan="2">> 0</td></tr><td align="center">T</td></table>
D.	<table><tr><td rowspan="2">&conint; Q < 0 and &conint;</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center> Q</center></td><td rowspan="2">> 0</td></tr><td align="center">T</td></table>
Answer» B. <table><tr><td rowspan="2">&conint; Q < 0 and &conint;</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center> Q</center></td><td rowspan="2">< 0</td></tr><td align="center">T</td></table>

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Which one of the following pairs of equations describes an irreversible heat engine?

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