$A$ lift is coming down from the $8^{th}$ floor and is just about to reach the $4^{th}$ floor. Taking the ground floor as the origin and the upward direction as positive for all quantities,which one of the following is correct?
- A$x > 0, v < 0, a > 0$
- B$x > 0, v < 0, a < 0$
- C$x < 0, v < 0, a > 0$
- D$x > 0, v > 0, a < 0$
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