Consider the following including the Question and the Statements: There are 5 members A, B, C, D, E in a family. Question: What is the relation of E to B? Statement- 1: A and B are a married couple. Statement- 2: D is the father of C. Statement- 3: E is D's son. Statement- 4: A and C are sisters. Which one of the following is correct in respect of the above Question and Statements?

To determine the relation of E to B, we need to establish the family tree using all the given statements. 1. From Statement 1: A and B are a married couple. (A -- B) 2. From Statement 4: A and C are sisters. * This means A is female. Since A is married to B, B must be male. * So, A (female) and C (female) are sisters. 3. From Statement 2: D is the father of C. * Since A and C are sisters, D is also the father of A. * So, D (male) is the father of A and C. 4. From Statement 3: E is D's son. * Since D is the father of A and C, and E is D's son, E is the brother of A and C. (E is male). Now, let's connect E to B: * A is B's wife (from statement 1). * E is A's brother (derived from statements 2, 3, and 4). * Therefore, E is B's brother-in-law. All four statements are required to establish these connections: * Statement 1 connects A and B. * Statement 4 connects A and C. * Statement 2 connects D to C (and thus to A). * Statement 3 connects E to D (and thus to A and C). Without any one of these statements, the full relationship cannot be determined. For example, if Statement 4 (A and C are sisters) is missing, we wouldn't know how A relates to C, and therefore couldn't link A to D and E. Similarly for other statements. Thus, all four statements together are necessary and sufficient to answer the question. The final answer is C.