Q: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Question: HPLC (High Efficiency Liquid Chromatography) uses packings with a range of size or particle diameter typical of:
Options: <1> 3-10 Armstrong. <2> 3-10 Nanometers. <3> 3-10 Millimeters. <4> 3-10 Micrometers. <5> 3-10 Centimeters
A:
4