Which type of blood contains A antibodies (but not B antibodies) in the plasma and lack Rh antigen?

Options

A. AB negative
B. A positive
C. B negative
D. O positive

Answer

To determine which type of blood contains A antibodies (but not B antibodies) in the plasma and lacks the Rh antigen, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Presence of A Antibodies**:
- The question states that A antibodies are present in the plasma. This indicates that the blood type cannot be A, as type A blood would have anti-B antibodies instead.

2. **Identify the Absence of B Antibodies**:
- The question also specifies that B antibodies are absent. This means that the blood type cannot be B or AB, as both of these blood types would have anti-A antibodies.

3. **Determine Possible Blood Types**:
- Given the presence of A antibodies and the absence of B antibodies, the only possible blood type left is type B. However, since we are looking for a blood type that lacks Rh antigen, we need to consider the Rh factor as well.

4. **Consider the Rh Factor**:
- The question states that the Rh antigen is absent. This means the blood type cannot be Rh positive. Therefore, we are looking for a blood type that is Rh negative.

5. **Conclusion**:
- Combining the information, the only blood type that has A antibodies (and not B antibodies) in the plasma and lacks the Rh antigen is **B-negative** (B-).

### Final Answer:
The blood type that contains A antibodies (but not B antibodies) in the plasma and lacks the Rh antigen is **B-negative (B-)**.

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