Which of the Following Is True About the English-Immersion Approach

Which of the following is true about the English-immersion approach to teaching English?

A) It is a system of teaching non-English-speaking children in their native language while they learn English and later switching to all-English instruction.
B) It is an approach to teaching reading that emphasizes decoding unfamiliar words.
C) It is an approach to teaching reading that emphasizes visual retrieval and use of contextual clues.
D) It is an approach to teaching English as a second language in which instruction is presented only in English.