i think it should be D.....although i must admit I cheated slighty by using a calculator to verify

stat 1 ... i picked a few values for the average speed, from which the time = 16 km / avg speed ... whatever number i picked, i always got a time greater than 2 hours. to verify, i used 6.39999, and still got less than 2. so it seemed sufficient

stat 2 ... picked values again. started off with 9 minutes, and you get 9*16km=144 min, and then moving up , the amount of time just increases, so sufficient as well