The correct options are B
$$ Q_A - Q_D = W_A -W_D$$ D
$$ Q_A > Q_B > Q_C > Q_D $$
Work done is equal to the area under the P-V curve.
From the graph, area under path A is the largest whereas under path c is the smallest.
Thus $$W_A>W_B>W_C>W_D$$ ............(1)
From Ist law of thermodynamics, $$ Q= \Delta U+ W$$ ........(2)
As $$\Delta U $$ is a state function, thus $$\Delta U $$ is same for all paths.
From (1) & (2), $$Q_A>Q_B>Q_C>Q_D $$
Also for path A and D, $$Q_A=\Delta U+ W_A$$ and $$Q_D=\Delta U+W_D$$
Subtracting these two, $$\implies Q_A-Q_D= W_A-W_D$$