Along with the Monopoly Firms' Cost Curves, the Shape and Position

Multiple Choice

Along with the monopoly firms' cost curves, the shape and position of the demand curve determine which of the following?
(i) the price the monopoly will charge for its good
(ii) the shape and position of the marginal-revenue curve
(iii) the profit-maximising quantity

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