The manager of the customer service division of a major consumer electronics company is interested in determining whether the customer who have purchased a videocassette recorder made by the company over the past 12 months are satisfied with their products. 1. Referring to situation 1. the population of interest is: a. All the customers who have bought a videocassete recorder made by the company over the past 12 months. b. All customers who have bought a videocassette recorder made by the company and brought it in for repair over the past 12 months. c. All customers who have used a videocassette recorder over the past 12 months. d. All customers who have ever bought a videocassette recorder made by the company