In this task, you need to provide the correct option for a given problem from the provided options.

[Q]: Problem: the monthly incomes of a and b are in the ratio 5 : 2 . b ' s monthly income is 12 % more than c ' s monthly income . if c ' s monthly income is rs . 12000 , then find the annual income of a ? 
Options: a ) rs . 420000 , b ) rs . 403200 , c ) rs . 201600 , d ) rs . 504000 , e ) none of these
[A]: b


[Q]: Problem: a can contains a mixture of liquids a and b is the ratio 7 : 5 . when 3 litres of mixture are drawn off and the can is filled with b , the ratio of a and b becomes 7 : 9 . how many liter of liquid a was contained by the can initially ? 
Options: a ) 7 , b ) 10 , c ) 12 , d ) 14 , e ) 16
[A]: a


[Q]: Problem: how many of the positive factors of 75 are not factors of 95 ? 
Options: a ) 0 , b ) 1 , c ) 2 , d ) 3 , e ) 4
[A]:
e