The following question, consist of two words each that have a certain relationship to each other, followed by four lettered pairs of words. Select the lettered pair that has the same relationship as the original pair of words:
Candle : Wick

A. Bicycle : Wheel

B. Oven : Fire

C. Hammer : Nail

D. Light : Bulb

Answer: Option A

Solution(By Examveda Team)

Second is the most essential working part of the first.