The graph shows the position function of a car. Use the shape of the graph to explain your answers to the following questions.
(a) What was the initial velocity of the car?
(b) Was the car going faster at $B$ or at $C$ ?
(c) Was the car slowing down or speeding up at $A, B,$ and $C ?$
(d) What happened between $D$ and $E ?$
(GRAPH CAN'T COPY).