Task: Question Answering
Input (English): Problem: a reindeer chased by a cheetah passed a certain tree at a constant speed of 50 miles per hour while being chased by a cheetah . then , 2 minutes later , the cheetah passed the same tree at a constant speed of 60 miles per hour . if both animals maintained their speeds , how long after the cheetah passed the tree did the cheetah catch up with the reindeer ? 
Options: a ) 30 min , b ) 45 min , c ) 1 hr , d ) 3 min , e ) 1 min
Output (English): d