Sara and Sam went for a two-hour drive. According to the graph, between 40 minutes and 80 minutes into their trip, they--
Responses
A slowed down to a speed of 15km/min.slowed down to a speed of 15km/min.
B traveled at a constant rate of 30km/min.traveled at a constant rate of 30km/min.
C were not moving since there was no change in position.were not moving since there was no change in position.
D turned around to go home but their speed remained constant.