The correct order of decreasing acidity of the following aliphatic acids is:
1
(CH₃)3CCOOH > (CH₃)₂CHCOOH > CH₃COOH > HCOOH
2
CH₃COOH > (CH₃)₂CHCOOH > (CH₃)3CCOOH > HCOOH
3
HCOOH > CH₃COOH > (CH₃)₂CHCOOH > (CH₃)3CCOOH
4
HCOOH > (CH₃)3CCOOH > (CH₃)₂CHCOOH > CH₃COOH