20. All of the following are examples of marketing-controlled information sources EXCEPT:
a. a review of laser printers in Consumer Reports. b. brochures about kitchen products sold by the Home Depot. c. a coupon for $1.00 off of laundry detergent. d. a recipe for oatmeal raisin cookies on a package of oatmeal. e. an advertisement in a magazine.
A review by Consumer Reports would not be controlled by any marketer.