30) Gateman's Wedding Rings, a monopoly firm, recently put its products on sale. However, Professor Gateman noticed that the discount is not really attracting more customers. What would be Professor Gateman's next move? a. Invest in advertisement campaigns to attract customers. b. Further the discount because this is his dominant strategy. c. Apply price discrimination strategy to maximize his producer surplus. d. Wait for a while until the discount brings out the desired effect; customers could just be slow in reaction. e. Decrease the quantity supplied