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

Problem: 9 log 9 ( 7 ) = ? 
Options: a ) 1 , b ) 2 , c ) 7 , d ) 4 , e ) 5
c

Problem: there are 250 doctors and nurses at a hospital . if the ratio of doctors to nurses is 2 to 3 , how many nurses are at the hospital ? 
Options: a ) 134 , b ) 138 , c ) 142 , d ) 146 , e ) 150
e

Problem: if shares of two persons in profits are rs . 600 and rs . 1000 then ratio of their capitals is 
Options: a ) 3 : 5 , b ) 2 : 3 , c ) 4 : 3 , d ) 1 : 3 , e ) 1 : 2

a