When and at what place is it mandatory to operate the direction indicator?

1. AThe signal in the direction indicator shall be given at a distance of 150 metres before the turn.
2. BThe signal in the direction indicator shall be given only in a situation where there are other road users nearby.
3. CThe signal shall be given only before turns to the right or to the left.
4. DAt the place and time when other road users will notice the signal given.

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