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

Q: Problem: if x and y are sets of integers , x # y denotes the set of integers that belong to set x or set y , but not both . if x consists of 12 integers , y consists of 18 integers , and 6 of the integers are in both x and y , then x # y consists of how many integers ? 
Options: a ) 6 , b ) 16 , c ) 18 , d ) 30 , e ) 174

A: c
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Q: Problem: what is the square root of 4,624 ? 
Options: a ) a ) 18 , b ) b ) 9 , c ) c ) 68 , d ) d ) 62 , e ) e ) 81

A: c
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Q: Problem: sandy is younger than molly by 12 years . if their ages are in the respective ratio of 7 : 9 , how old is molly ? 
Options: a ) 36 , b ) 45 , c ) 54 , d ) 63 , e ) 72

A:
c
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