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When a system is taken from state f along path `iaf, Q = 50 J` and `W = 20 J`. Along path `ibf, Q = 35 J`. If `W = -13 J` for the curved return path `f I, Q` for this path is

A

`33j`

B

`23j`

C

`-7j`

D

`-43j`

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The correct Answer is:
D
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