With Regard to Driving and Talking on a Cell Phone

With regard to driving and talking on a cell phone research suggests all of the following except

A) Drivers who are also using a telephone drive with extra caution to compensate for their perceived skill reduction
B) Drivers slow down when talking on the phone.
C) Drivers have slower reaction times when engaged driving and phoning.
D) Drives talking on cell phones sometimes stop at green lights.