According to the theory covered in class:
a. The models that were used to analyse markets with a homogenous product (i.e. the Cournot model, Stackelberg's model and, Price Leadership model, and the cartel/monopoly model) can be adapted to study differentiated products with some modifications.
b. The models that were used to analyse markets with a homogenous product (i.e. the Cournot model, Stackelberg's model and, Price Leadership model, and the cartel/monopoly model) cannot be adapted to study differentiated products with some modifications.
c. All markets with differentiated products can only be studied with the Monopolistic Competition Model. All other models covered in class are not suitable for differentiated products and it is not possible to make any modification to adapt them.
d. The models that were used to analyse markets with a homogenous product (i.e. the Cournot model, Stackelberg's model and, Price Leadership model, and the cartel/monopoly model) can be used to analyze differentiated products without any modifications.