​You Work for a Printing Company and Have Been Asked

​You work for a printing company and have been asked to conduct research on customer reading preferences.You want to answer the following questions: 1) do readers prefer to read electronic books? 2) do they prefer to read paper-based books? or 3) do they not have a preference? You decide that to start off the process,you are going to peruse a series of secondary sources,including published articles,magazine articles,and documents you have purchased from a syndicated service. ​
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Based on what you know about collecting data,you know that there are several benefits of using secondary data.You are not as clear,however,about the disadvantages.Which of the following is a drawback of using secondary data?

A) ​They are more expensive than using primary data.
B) ​Secondary data provide very rich, robust data.
C) ​One needs at least a few months to conduct secondary research.
D) ​Many researchers use secondary data only when primary research is not an option.
E) ​Secondary data may have been collected for unrelated purposes and may be irrelevant to your needs.