Dr. Kibble is monitoring the position of a meteoroid as it approaches planet Earth. He observes it through a telescope every 5.0 minutes and records its position in the table below. Time (min) Distance from Earth (km) 0.0 18,000 5.0 15,000 10.0 12,000 15.0 9,000 Which of the following could be the graph of the meteoroid's remaining distance to Earth through time?