| Column I | Column II | ||
| a. | A | (i) | Heavy chain of antibody | 
| b. | B | (ii) | Light chain of antibody | 
| c. | C | (iii) | Antigen binding site of antibody | 
Consider the following two statements:
HB vaccine
| A: | is produced from recombinant yeast. | 
| B: | provides passive immunity against hepatitis B. | 
 
1. Only A is correct. 
2. Only B is correct. 
3. Both A and B are correct. 
4. Both A and B are incorrect.