Correct word to fill in the blank

[Tan Elaine]

As bilingualism is an educational policy, it is __________ for all pupils to study two languages.

a) statutory
b) obligatory
c) mandatory

Which is the best word to fill in the blank? I would chose (b). Am I correct?

Thanks.

 

[bhaisahab]

As bilingualism is an educational policy, it is __________ for all pupils to study two languages.

a) statutory
b) obligatory
c) mandatory

Which is the best word to fill in the blank? I would chose (b). Am I correct?

Thanks.

Both b and c would be OK.