Task: Question Answering
Input (English): Problem: a 4 digit number is such that the product of all of its digits is 126 . the sum of all the digits is equal to the 2 digit number formed by using thousands digit and tens digit ( 1000 digit in tens place & 10 digit in units place ) which in turn is equal to 19 . then difference of units and 1000 place of the number is , given that this difference is positive . 
Options: a ) 1692 , b ) 1792 , c ) 1795 , d ) 1892 , e ) 1992
Output (English): b