Assertion (A): Sri Lanka adopted Sinhala as the only official language of the state.
Reason (R): The government of Sri Lanka wanted to foster their culture, language, and religion.
a) Both A and R are true, and R is the correct explanation of A.
b) Both A and R are true, but R is not the correct explanation of A.
c) A is true, but R is false.
d) A is false, but R is true.