What's the answer to this ​

Liam's parents are driving three times as fast as liam is biking, but they left later than he did. if his parents caught up with him two hours after he left, how much later than liam did they leave?

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4

Answer this question, only if you know the answer. 30 points and brainliest!