Ahmed is riding the elevator in a building. the building has floors above and below ground level. ahmed uses the expression below to describe his movement. 6 + (–8) which statement could describe ahmed’s movement? a. ahmed started 6 floors above ground level, then he went down 8 floors. b. ahmed started 6 floors above ground level, then he went up 8 floors. c. ahmed started 6 floors below ground level, then he went up 8 floors. d. ahmed started 6 floors below ground level, then he went down 8 floors.