Which of the following plots does not represent the behaviour of an ideal binary liquid solution?
A. Plot of `P_(A)` versus `x_A)` (mole fraction of A in liquid phase ) is linear
B. Plot of `P_(B)`versus `x_(B)` is linear
C. Plot of `P_("total")` versus `x_(A) (or x_(B))` is linear
D. Plot of `P_("total")` versus `x_(A)` is non -linear.