Consider the following statements: 1. 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? a ) I only b ) ill only . c) I and 11 only . d) II and III only .