Lydia owns a railroad company in Belgium and acts as a monopolist. Each train has two types of seats: business class and economy class.
Which of the following strategies could Lydia employ to maximize profits?
a) Offering discounts only on economy class tickets.
b) Charging the same price for both business and economy class tickets.
c) Charging higher prices for business class tickets.
d) Decreasing the number of trains running each day.