Person having 'B' blood group have antibody `:-`

Options

A. Anti A
B. Anti B
C. Both
D. None

Answer

To determine the antibodies present in a person with 'B' blood group, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Blood Group Classification**: Blood groups are classified based on the presence of specific antigens on the surface of red blood cells. The main blood groups are A, B, AB, and O.

2. **Identify Antigens for B Blood Group**: A person with 'B' blood group has B antigens on their red blood cells. This means that the surface of their red blood cells expresses the B antigen.

3. **Determine the Corresponding Antibodies**: The antibodies present in the blood are the proteins that react against foreign antigens. For a person with 'B' blood group, the body will produce antibodies against the A antigen.

4. **Conclusion**: Therefore, a person with 'B' blood group will have anti-A antibodies.

### Final Answer:
A person having 'B' blood group has antibody A (anti-A).

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