What is the Monopolist's decision in the face of potential competition from an Entrant in the undifferentiated product market for computer memory disks?
a) The Monopolist should expand production by building a second factory to increase output and maintain its market power.
b) The Monopolist should collaborate with the Entrant to limit competition and maintain its monopoly.
c) The Monopolist should continue operating with only one factory to keep production levels stable and prices high.
d) The Monopolist should invest in research and development to differentiate its product and minimize potential competition.