Task: Question Answering
Input (English): Problem: each digit 1 through 5 is used exactly once to create a 5 - digit integer . if the 5 and the 4 can not be adjacent digits in the integer , how many 5 - digit integers are possible ? 
Options: a ) 48 , b ) 66 , c ) 76 , d ) 78 , e ) 72
Output (English): e