Every time the attribute $A$ appears, it is matched with the same value of attribute $B$ but not the same value of attribute $C$. Which of the following is true?
- A. $A \to (B, C)$
- B. $A \to B, A \to\to C$
- C. $A \to B, C \to\to A$
- D. $A \to\to B, B \to C$
Answer: B. $A \to B, A \to\to C$
Explanation: $A \to B$ means A determines B (functional dependency). The statement says A matches same B.\n"Not same value of C" implies A does not determine C functionally, but might be a multi-valued dependency $A \to\to C$ if C's values depend only on A?