Task: Question Answering
Input (English): Problem: the distance between west - town to east - town is 10 kilometers. two birds start flying simultaneously towards one another, the first leaving from west - town at a speed of 4 kilometers per minute and the second bird, leaving from east - town, at a speed of 1 kilometers per minute. what will be the distance, in kilometers, between the meeting point and west - town ?
Options: a. 3., b. 8., c. 10., d. 12., e. 15.
Output (English): b