回複：FP code 1,2,3

I went back to some old postings and found one which answers my questions (sweating). It was posted by "sameboat" on 08/03/05. He/She also posted the following link if details needed.
http://uscis.gov/graphics/formsfee/finger/
BTW, according to "SAMEBOAT", code 3 = code 1 (fingerprint) + code2(biometrics)