In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

[EX Q]: Problem: find the value of 80641 x 9999 = m ? 
Options: a ) 807518799 , b ) 806436469 , c ) 807538799 , d ) 806329359 , e ) 817431046
[EX A]: d

[EX Q]: Problem: a straight line in the xy - plane has y - intercept of 49 . on this line the x - coordinate of the point is 71 and y - coordinate is 12 then what is the slope of the line ? 
Options: a ) 0.5 , b ) 0.51 , c ) - 0.52 , d ) 0.31 , e ) - 0.49
[EX A]: c

[EX Q]: Problem: what is the remainder when 14,456 × 15,657 × 16,788 is divided by 10 ? 
Options: a ) 6 , b ) 8 , c ) 4 , d ) 3 , e ) 2
[EX A]:
a