Which of the Following Best Describes the Order in Which

Which of the following best describes the order in which electron bunches and the resulting x-rays travel through the head of a linear accelerator?

A) bending magnet,dose chambers,target,flattening filter,wedge
B) bending magnet,target,dose chambers,primary collimator,wedge,flattening filter
C) bending magnet,target,primary collimator,flattening filter,wedge,dose chamber
D) bending magnet,target,primary collimator,flattening filter,dose chamber,MLC
E) bending magnet,dose chambers,target,flattening filter,primary collimator,MLC