Correct Answer - C
` press prop 1/V` in the preocess `AB`.
(V decrease, `rho` increases)
In isothermal process (`T` = constant), `rho prop 1/V`
As `V` decreases, `P` increases.
so, the `rho` increase, `V` decrease (`rhoV` curve) and `P` increase for `V` decrease (`P-T` curve)
Options (b) and (c) may be correct.
But process `B-C` is shown by a dot in `(rho-V)` curve.
It means `BC` is a isochoric process.
Process `BC` in option (c) is a isochoric process because `P prop T`.