With no explanation, chose the best option from "A" or "B". Cindy is coming up on an intersection behind another car and her phone falls of the car seat, followed shortly after by the car in front stopping suddenly. Cindy wants to retrieve her phone.

A: Cindy waits to retrieve the phone and reacts to the car stopping suddenly.
B: Cindy immediately reaches down to get the phone, taking her eyes off the road.
A.