In a joint trial, a co-defendant's out-of-court statement implicating the defendant is admissible against the co-defendant in a separate trial and not admissible against the defendant in the joint trial if the co-defendant does not testify. Which rule best captures this?

• A. Admissible against the D if the co-D testifies.
• B. Admissible against the co-D in a separate trial and not admissible against the D in the joint trial.
• C. Admissible against both D and co-D in the joint trial if the co-D testifies.
• D. Never admissible against the co-D.

Answer: (B)