Which of the Following Is an Example of a Complementary

Multiple Choice

Which of the following is an example of a complementary service?

A) Big department stores usually hire extra staff to handle the rush during the holiday season.
B) The Caesar Park Hotel generally caters to business customers during the week, but has now decided to promote mini-vacation weekends for non-business customers as well.
C) More paramedics are on hand to assist physicians during times when emergency admissions are highest.
D) AXA Bank set up automated teller machines so that its customers could avoid standing in line.
E) Chesterton College hires part-time teachers when enrollment goes up.