(a) How does a platform firm take advantage of switching costs to increase barrier of entry? (4 marks) (b) How would you suggest the platform firms to create the barrier to entry for protecting their market share and profits? List and discuss three types of barriers to entry. (6 marks) (c) What are the two important considerations related to economic concepts before engaging in internationalization? Explain. (6 marks) Page 8 of 9 (d) List the five modes of entry into international business in order from lowest risks to highest risk? Which is the most appropriate mode of entry in international business to an enterprise with little experience of international market