The Reason Why a Health Professional Working in Radiology Must

The reason why a health professional working in radiology must wear a film badge is

A) to identify the person as working in that department.
B) to protect the person from the harmful effects of radiation.
C) to detect and record the amount of radiation which the person is exposed to.
D) to record how many x-rays the individual has taken every day.
E) to initiate operation of the x-ray machine by swiping the film badge on the machine.