Jacinta drove her car from the mountains into the desert. She travelled from
an altitude of 4,450 feet above sea level to an altitude of 150 feet below sea level.
Jacinta drove at a constant speed and the trip took her five hours. Which
statement is true about her rate of change in elevation?

A She descended at a rate of 920 feet per hour.
B She ascended at a rate of 860 feet per hour.
C She ascended at a rate of 920 feet per hour.
D She descended at a rate of 860 feet per hour.