Which of the Following Is NOT a Limitation of the Study

Which of the following is NOT a limitation of the study by Strayer and Johnston (2001) on cell phone use while driving?

A) The authors did not realize that they created a triple task and that their baseline condition was actually dual-task.
B) The authors did not show that the pursuit-tracking task is a valid substitute for actual driving.
C) The authors did not report performance on the pursuit-tracking task.
D) The authors used reaction time on a secondary task as a measure of distraction.