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

Problem: what number has a 150 : 1 ratio to the number 2 ? 
Options: a ) 130 , b ) 300 , c ) 200 , d ) 30 , e ) 75
b

Problem: 9 log 9 ( 5 ) = ? 
Options: a ) 1 , b ) 2 , c ) 3 , d ) 5 , e ) 8
d

Problem: in a class , 30 students pass in english and 20 students in math , while some students among these pass in both . how many more students do only english as compared to those doing only maths ? 
Options: a ) 10 , b ) 15 , c ) 20 , d ) 25 , e ) indeterminate

a