What promotion blend would be most appropriate for producers of the following established products? Assume average- to large-sized firms in each case and support your answer. a. Chocolate candy bars. b. Car batteries. c. Panty hose. d. Castings for truck engines. e. A special computer used by manufacturers for control of production equipment. f. Inexpensive plastic rainhats. g. A digital tape recorder that has achieved specialtyproduct status.