What do the two signs before you have in common?

1. ASign 144 will always be placed before the place where sign 101 is placed.
2. BBoth of them recommend the driver to slow down and increase alertness.
3. CSign 101 will always be placed before the place where sign 144 is placed.
4. DBoth of them belong to the group of information signs and warn about the condition of the road.

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