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

Example Input: Problem: if 0.4 of a number is equal to 0.06 of another number , the ratio of the numbers i 
Options: a ) 2 : 3 , b ) 3 : 4 , c ) 3 : 20 , d ) 20 : 3 , e ) none
Example Output: c

Example Input: Problem: three numbers are in the ratio 1 : 4 : 6 and their h . c . f is 9 . the numbers are : 
Options: a ) 1 , 4,6 , b ) 12 , 24,36 , c ) 10 , 20 , 30 , d ) 12 , 24 , 36 , e ) 9 , 36,54 .
Example Output: e

Example Input: Problem: how many positive integers between 20 and 2000 ( both are inclusive ) are there such that they are multiples of 10 ? 
Options: a ) 201 , b ) 193 , c ) 200 , d ) 199 , e ) 195
Example Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
d

