Which of the Following Statements Is LEAST-Likely True

Which of the following statements is LEAST-Likely true?

A) If the wiper blades must be replaced, disengage them from the wiper arm.
B) When installing windshield wiper arms, make sure they are adjusted properly.
C) If a nut is used, a cover over the nut must be pivoted upward or popped off.
D) Engaging the arm into different teeth on the drive shaft will not change the adjustment.