A 911 emergency response service needs operators who are bilingual in English and Spanish. A few applicants of Spanish origin are rejected due to poor English-speaking skills. They file a complaint on the grounds of discrimination based on nationality. Their complaint is squashed. Here, the defense of the federal government is on the grounds of:
A) Bona fide occupational qualifications ?
B) Exclusionary rule?
C) Inculpatory evidence ?
D) Circumstantial evidence?