For Which of the Following Projects Would Secondary Data Likely

For which of the following projects would secondary data likely be sufficient?

A) A pet food manufacturer wants to determine if dogs will prefer a new type of dog food.
B) Officials of a local bank want to determine how the bank's customers feel about the service they receive.
C) A national department store chain wants to know if consumers are willing to pay more to purchase products manufactured in the U.S.
D) A fast-food franchisee wants to determine the market potential for a new type of specialty food in a certain area.
E) None of the above.