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(B) The cycle consists of a straight line path from $A$ to $B$ and an adiabatic path from $B$ to $A$.Along the straight line path from $A$ to $B$,the

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heat is absorbed in the upper part of the straight line path and released in the lower part

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(B) The cycle consists of a straight line path from $A$ to $B$ and an adiabatic path from $B$ to $A$.Along the straight line path from $A$ to $B$,the gas undergoes expansion,and the temperature changes. Since the path is a straight line,the heat exchange varies. Specifically,heat is absorbed by the gas during the expansion phase along the straight line.Along the curved path from $B$ to $A$,the process is adiabatic,meaning no heat is exchanged $(dQ = 0)$.However,in a complete cycle,for work to be done by the gas,heat must be absorbed from a source and some must be rejected to a sink. In this specific cycle,heat is absorbed during the straight-line expansion and rejected during the adiabatic compression (if we consider the cycle direction). Therefore,option $B$ correctly describes the heat exchange characteristics.

An ideal gas is made to undergo a cycle depicted by the $p-V$ diagram given below. The curved line from $A$ to $B$ is an adiabat. Then,

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