Which of the following statements about inductively coupled plasma mass spectrometry (ICP-MS) are FALSE?

1. The instrument measures the relative abundances of ions separated on the basis of mass-to-charge ratio 2. Samples must be dissolved in a dilute solution, preferably aqueous acid 3. ICP-MS cannot be used to determine arsenic 4. ICP-MS only detects easily ionized elements 5. UMass Amherst does not have one of these instruments

a. all of them

b. 1, 2, and 5

c. 3, 4 and 5

d. 1 and 2

e. 1, 2 and 4