Match the classes of drugs as given in Column I with their action given in Column II.

Column I Column II
A. Analgesics 1. Painkilling effect
B. Antiseptics 2. Treatment of acidity
C. Antihistamines 3. Applied to diseased skin surfaces
D. Antacids 4. Prevents the interaction of histamine with its receptor

Codes

A B C D
1. 2 3 4 1
2. 3 1 4 2
3. 1 3 4 2
4. 4 3 2 1