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

Ex Input:
Problem: a group of people participate in some curriculum , 35 of them practice yoga , 20 study cooking , 15 study weaving , 7 of them study cooking only , 5 of them study both the cooking and yoga , 3 of them participate all curriculums . how many people study both cooking and weaving ? 
Options: a ) 1 , b ) 2 , c ) 3 , d ) 4 , e ) 5

Ex Output:
e


Ex Input:
Problem: 210 students were asked in a survey if they preferred windows or mac brand computers . 60 students claimed that they preferred mac to windows brand computers . one third as many of the students who preferred mac to windows , equally preferred both brands . 90 of the students had no preference . how many of the students in the survey preferred windows to mac brand computers ? 
Options: a ) 25 , b ) 40 , c ) 50 , d ) 60 , e ) 75

Ex Output:
b


Ex Input:
Problem: what number has a 20 : 1 ratio to the number 10 ? 
Options: a ) 130 , b ) 100 , c ) 200 , d ) 150 , e ) 120

Ex Output:

c