When Callie wants to obtain information to research changes in her market or determine what her customers are likely to want in the future, she relies on the articles and data available in trade journals, feedback from surveys, and personal interviews of her customers. Which of the following statements about Callie's sources of information is most accurate? A. Callie is relying entirely on primary data for her research needs.
B. Callie is relying entirely on secondary data for her research.
C. The surveys and personal observations provide primary data, while the journals provide secondary data.
D. The surveys and personal observations provide secondary data, while the journals provide primary data.