Harry started a 4-mile hike with a full 10-cup canteen of water and finished the hike in 2 hours with 2 cup of water remaining in the canteen. If the canteen leaked at the rate of 1 cup per hour and Harry drank 3 cups of water during the last mile, how many cups did he drink per mile during the first 3 miles of the hike? Select the correct option:  A) 1 / 3  B) 2 / 3  C) 3 / 3  D) 3 / 1  E) 3 / 2

Rationale: "no of cups leaked during the trip = 2 cups . no of cups harry drank = 6 cups . no of cups harry drank during the first 3 miles = 3 . drink / mile = 3 / 3 answer : c"
Answer: C