Fred Desroches Conducted Research on Bank Robbery

Fred Desroches conducted research on bank robbery. Which of the following summarizes several of his findings?

A) Offenders may use the Internet to learn about techniques for safecracking and they are more likely to commit robberies in the first hour the bank is open.
B) Bank robberies are most often conducted in winter months when faces are more easily concealed, and the majority of bank robbers tend to have previous criminal histories.
C) They may use sources such as bank security schedules to determine the best times to commit a robbery, and they are most likely to pose as security staff to gain entry.
D) They often use local media to research and plan their crimes and they usually maintain the same modus operandi throughout their careers.