You Have Just Witnessed a Traffic Accident

You have just witnessed a traffic accident. In order to best avoid a misinformation effect, the police officer should ask you which of the following?

A) How fast were the cars going when they contacted each other?
B) How fast were the cars going when they smashed into each other?
C) How fast were the cars going when they collided with each other?
D) How fast were the cars going when they crashed into each other?
E) Were the cars speeding when the accident occur