Task: Question Answering
Input (English): Problem: kareena , saif , and a puppy start walking down a road . they start at the same time , from the same point , in the same direction . the saif walks at 5 miles / hour kareena at 6 miles / hour . the puppy runs from saif to kareena and back again with a constant speed of 10 miles / hour . the puppy does not slow down on the turn . how far does the puppy travel in 1 hour ? 
Options: a ) 10 miles , b ) 14 miles , c ) 12 miles , d ) 20 miles , e ) 30 miles
Output (English): a