Admissible Evidence: Case of Confession

A kothey ki yaad mein, a young boy is accused of theft. During questioning, he makes a statement, "Maine kuch liya thik hi hai." (I did take something, fine.) The investigating officer records this statement as evidence. However, the boy claims he was coerced into making this statement. Which of the following options is correct regarding admissibility of this confession?

A) It is admissible as primary evidence, regardless of coercion. B) It is inadmissible as secondary evidence, due to the presence of coercion. C) It is admissible as secondary evidence, but cannot be relied upon for conviction. D) It is inadmissible in its entirety.

My initial thought: A) It is admissible as primary evidence, regardless of coercion. (Note: This is incorrect.)

What's your answer and explanation?