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

Problem: sandy is younger than molly by 6 years . if their ages are in the respective ratio of 7 : 9 , how old is molly ?
Options: a ) 21 , b ) 24 , c ) 27 , d ) 36 , e ) 45
c

Problem: a certain university will select 1 of 6 candidates eligible to fill a position in the mathematics department and 2 of 9 candidates eligible to fill 2 identical positions in the computer science department . if none of the candidates is eligible for a position in both departments , how many different sets of 3 candidates are there to fill the 3 positions ?
Options: a ) 216 , b ) 212 , c ) 214 , d ) 210 , e ) 120
a

Problem: find the number of factors of 9321 ?
Options: a ) 3 , b ) 6 , c ) 8 , d ) 16 , e ) 32
c