Choose the one alternative that best completes the statement or answers the question. -Suppose that a car traveling to the east (+x direction) begins to slow down as it approaches a

Choose the one alternative that best completes the statement or answers the question.
-Suppose that a car traveling to the east (+x direction) begins to slow down as it approaches a traffic light. Which statement concerning its acceleration must be correct?
A) Its acceleration is zero.
B) Its acceleration is in the -x direction.
C) Its acceleration is in the +x direction.
D) Its acceleration is decreasing in magnitude as the car slows down.

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