In a Mass Spectrometer,ion Detection Is Typically Accomplished Through the Use

In a mass spectrometer,ion detection is typically accomplished through the use of an electron multiplier.This involves:

A) a densitometer that measures ion effluent and produces a "peak" of activity visible on a computer monitor.
B) a chain of dynodes that "multiplies" the number of electrons to provide a detectable signal.
C) collection of the ion current directly.
D) four parallel electrically conductive rods arranged in a square array that increases electron number.