A lift is coming from the 8th floor and is just about to reach the 4th floor. Taking ground floor as origin and positive direction upwards 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