A student records $\Delta Q, \Delta U \& \Delta W$ for a thermodynamic cycle $A$ $\rightarrow$ $B \rightarrow C \rightarrow A$. Certain entries are missing. Find correct entry in following options.
  • A$W_{BC} = - 70 \,\,J$
  • B$\Delta Q_{CA} = 130 \,\,J$
  • C$\Delta U_{AB} = 190\,\, J$
  • D$\Delta U_{CA} = - 160\,\, J$
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