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: if 7 ^ k = 2 , then 7 ^ ( 4 k + 2 ) = 
Options: a ) 729 , b ) 754 , c ) 784 , d ) 783 , e ) 108
[EX A]: c

[EX Q]: Problem: the largest 5 digit number exactly divisible by 91 is : 
Options: a ) 25698 , b ) 581396 , c ) 369741 , d ) 99918 , e ) 1258
[EX A]: d

[EX Q]: Problem: 0.0003 x 0.3 = ? 
Options: a ) 0.0009 , b ) 9.0 e - 05 , c ) 0.09 , d ) 0.009 , e ) 9.0
[EX A]:
b