Not like a purely competitive firm, here a profit-maximizing monopolist can: (w) charge any price it finds advantageous and be assured of selling all this produces. (x) select a price and output combination by a downward-sloping demand curve. (y) spend unlimited amounts on advertising and marketing without reducing profits. (z) maximize profit from setting price equal to marginal cost.
Please choose the right answer from above...I want your suggestion for the same.