When Jane Fenton accepted a job in a travel agency, she thought that the work involved few complications. However, she soon learned that her impression was contrary to the facts. For example, booking an airplane flight involved many different rate schedules, each with its own set of conditions. To find the most suitable booking for a traveler demanded knowledge and judgement of a superior order.

(A) Jane Fenton was looking for an easy job.
(B) Booking an airplane flight is a complex task if the traveler is to be served properly.
(C) Airplane rates on flights between large cities are fixed by law.
(D) Jane Fenton was overwhelmed by the difficulties of her job.