Which of the following examples has a unit rate of 50 miles per hour? Select all that apply.
A) 250 miles in 5 hours
B) 300 miles in 5 hours
C) 200 miles in 4 hours
D) 240 miles in 4 hours
E) 700 miles in 14 hours
B) 300 miles in 5 hours
E) 700 miles in 14 hours