TABLE 1-3 The Manager of the Customer Service Division of a Major

Multiple Choice

TABLE 1-3
The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a Blu-ray player made by the company over the past 12 months are satisfied with their products.
-Referring to Table 1-3,if there are 4 different brands of Blu-ray players made by the company,the best sampling strategy would be to use

A) a simple random sample.
B) a stratified sample.
C) a cluster sample.
D) a systematic sample.