Task: Question Answering
Input (English): Problem: a certain clock marks every hour by striking a number of times equal to the hour , and the time require for a stroke is exactly equal to the time interval between strokes . at 6 : 00 the time lapse between the beginning of the first stoke and the end of the last stroke is 22 seconds . at 10 : 00 , how many seconds elapse between the beginning of the first stroke and the end of the last stroke ? 
Options: a ) 42 , b ) 36 , c ) 46 , d ) 38 , e ) 40
Output (English): d