Which of the following is a potential problem with case studies?

a. They provide too much detail and the researcher is likely to lose track of the most important facts.

b. They are generally too expensive to be economical.

c. They may be misleading because they don’t fairly represent other cases.

d. They are technically difficult and most researchers don’t have the skills to do them properly.

e. The dependent variable is difficult to operationally define in a case study.