112.
The answer is: A
Explanation
The correct answer is A: half blood.
Two persons are said to be related to each other by half blood when they have descended from a common ancestor but by different wives. For example, two brothers who share the same father but have different mothers are related by half blood.
Full blood means that two persons are descended from a common ancestor by the same wife.
Uterine blood means that two persons are descended from a common ancestress by her different husbands.
Therefore, neither B nor C is correct. D is also incorrect because it implies that B or C could be correct.