Assertion : A woman is capable of sueing a man of refusing to own a child, who has blood group O. The man has blood group B and woman has A.
Reason : She is right as genetically, he can be the father of the child.

Options

A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
B. Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion
C. Assertion is true but Reason is false
D. Both Assertion and Reason are false

Answer

To solve the question, we need to analyze both the assertion and the reason given in the context of blood group inheritance.

### Step-by-Step Solution:

1. **Understanding Blood Groups**:
- The blood group of a child is determined by the alleles inherited from the parents. Blood groups are classified based on the presence of antigens (A and B) on the surface of red blood cells.
- The possible genotypes for blood groups are:
- Blood group A: Genotype can be either IAIA (homozygous) or IAi (heterozygous).
- Blood group B: Genotype can be either IBIB (homozygous) or IBi (heterozygous).
- Blood group AB: Genotype is IAIB.
- Blood group O: Genotype is ii.

2. **Given Information**:
- The woman has blood group A (genotype could be IAIA or IAi).
- The man has blood group B (genotype could be IBIB or IBi).
- The child has blood group O (genotype must be ii).

3. **Possible Genotype Combinations**:
- We need to check if a child with blood group O can be produced from a woman with blood group A and a man with blood group B.
- If the woman is IAi (heterozygous) and the man is IBi (heterozygous), we can create a Punnett square to see the possible blood groups of their offspring.

4. **Punnett Square Analysis**:
- The gametes from the woman (IA or i) and the man (IB or i) can be combined as follows:
- IAIB (Blood group AB)
- IAi (Blood group A)
- IBi (Blood group B)
- ii (Blood group O)
- This shows that there is indeed a possibility for the child to have blood group O (genotype ii).

5. **Conclusion**:
- The assertion states that a woman can sue a man for refusing to own a child with blood group O, which is true because it is genetically possible for them to have such a child.
- The reason states that she is right because genetically he can be the father of the child, which is also true as shown by the Punnett square.

### Final Answer:
Both the assertion and the reason are true, and the reason correctly explains the assertion.