Compared to the Monopoly Outcome with a Single Price, Imperfect

Compared to the monopoly outcome with a single price, imperfect price discrimination (i) sometimes raises total surplus.
(ii) sometimes lowers total surplus.
(iii) always leads to a lower quantity of output.

A) (i) and (ii) only
B) (ii) and (iii) only
C) (i) and (iii) only
D) (iii) only