If A maps to B, B maps to C, and C maps to D, what does A map to?

• A. B
• B. A
• C. D
• D. C

Answer: (C)

This question tests how chaining mappings works. Each arrow applies a mapping in order, so you follow the sequence A maps to B, B maps to C, and C maps to D. Applying all three steps lands A at D. Therefore, A maps to D. The other possibilities would come from stopping after fewer steps: after the first step you’d have B, after two steps you’d have C.