Task: Question Answering
Input (English): Problem: there is a 5 - digit number . the fifth digit is one fourth of the third digit and one half of the fourth digit . third digit is one half of the first digit . second digit is 5 more than the fifth digit . what is that 5 - digit number ? 
Options: a ) 86421 , b ) 86424 , c ) 89421 , d ) 96421 , e ) 76421
Output (English): a