The brake fluid in the reservoir is dark and dirty-looking. What does this mean?

En español: El líquido de frenos del depósito tiene un color oscuro y aspecto sucio. ¿Qué significa?

A It is old or contaminated and must be replaced Correct answer
B It is in perfect condition, that is its normal colour
C It indicates the level is too high
D It means there is air in the intake system

Why this is the correct answer

Dark brake fluid indicates it is old or contaminated, which reduces braking performance. It must be replaced.

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