Which of the following is NOT an example of a situation when you might need to add vectors?

A.) You know your initial speed and final speed in a car moving in a straight line, and you want to know by how much your speed changed.

B.) Your workmates are having a tug-of-war, and you want to know who is likely to win based on the forces each team can apply.

C.) A person is walking on an escalator and you want to calculate the total velocity.

D.) An object is accelerating in two directions due to its motion in a car, and its orbit around the Earth, and you want to know the total acceleration.

E.) Several people are pushing on an object, and you want to know which way it will accelerate (if at all).