Consider the following statements: I. A vertically integrated firm is more dependent on its suppliers than a firm that is NOT vertically integrated. II. Many firms feel they can control quality better by making their own parts. III. A vertically integrated firm realizes profits from the parts it is "making" instead of "buying" as well as profits from its regular operations. Which of the above statements represent advantages to a firm that is vertically integrated? Multiple Choice I only. III only. I and II only. II and III only