The pure monopolist's demand curve is not
multiple choice
a. perfectly inelastic because MR < MC when demand is inelastic, so the price would be falling.
b. perfectly elastic because the firm will still have some competitors even if they are not close.
c. perfectly elastic because MR is negative when demand is elastic, so MR = MC < 0
d. perfectly inelastic because MR is negative when demand is inelastic, so MR = MC < 0