In which of the following conditions, the idle CO percentage should be measured with the vehicle ?

Question: In which of the following conditions, the idle CO percentage should be measured with the vehicle ?
[A].

Headlights and other electrical devices are switched off.

[B].

Headlights and other electrical devices are switched on.

[C].

Headlights and other lights are switched off.

[D].

Headlights are switched on.

Answer: Option A

Explanation:

No answer description available for this question.