Subject: mathqa
Question: the pinedale bus line travels at an average speed of 60 km / h , and has stops every 5 minutes along its route . yahya wants to go from his house to the pinedale mall , which is 10 stops away . how far away , in kilometers , is pinedale mall away from yahya ' s house ?
Option: 
A: 20 km
B: 60 km
C: 50 km
D: 40 km
Answer: C