Task: Question Answering
Input (English): Problem: the security gate at a storage facility requires a 5 - digit lock code . if the lock code must consist only of digits from 1 through 7 , inclusive , with no repeated digits , and the first and last digits of the code must be even , how many lock codes are possible ? 
Options: a ) 120 , b ) 240 , c ) 360 , d ) 720 , e ) 1440
Output (English): c