The displacement as a function of time for a mass attached to a spring is shown below. Displacement, cm A B C D 6 10 14 18 22 24 Time. 4. Which equation below correctly describes the position as a function of time for this mass-spring system? (A)x = (4cm)cos (-t) (B) x = (4cm)cos ("t) (C) x = (4cm)cos ("t) (D)x = (4cm)cos (8t)