Other Factors Being Equal, Which Child Is LEAST Likely to Benefit

Other factors being equal, which child is LEAST likely to benefit from a language immersion program in the United States?

A) an English-speaking child who is in a Spanish language immersion program focused on learning Spanish as quickly as possible
B) a Spanish-speaking child who is in an English language immersion program focused on learning English as quickly as possible
C) a Spanish-speaking child who is in an English language immersion program whose goal is bilingual education
D) an English-speaking child who is in a Spanish language immersion program whose goal is bilingual education