Which of the following has been a finding of prior research that has examined whether information systems audit staff should be recruited with an information technology background or an audit background:

a. Programmers make better information systems auditors than systems analysts or system designers

b. Information systems auditors who have an information technology background have higher turnover than those who have an audit background

c. Information systems professionals believe that information technology knowledge is easier to acquire than audit knowledge

d. It is easier to recruit more senior auditors than information technology professionals to the information systems audit function