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Assertion (A): Brake fluid must be renewed by time rather than by mileage.

Reason (R): Glycol brake fluid absorbs moisture from the atmosphere.

Select the correct answer from the options below.

  • A.Both A and R are true, but R is not the correct explanation of A
  • B.A is true but R is false
  • C.A is false but R is true
  • D.Both A and R are true, and R is the correct explanation of A

Answer: D

Absorption continues whether the vehicle is used or not, and the water lowers the boiling point until vapour lock becomes possible. Time is therefore the correct basis for the interval. The reason explains the assertion completely. Checking which component actually carries the load settles most questions of this kind at once. A symptom that appears under one condition and not another is what narrows the diagnosis quickly.

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