In which of the following cases the adjudicating evidence is not admissible?

• A. Expressions of experts in treaties if the author is dead or cannot be traced.
• B. Where the eyewitness witness has told facts to any other person, the statement of that person.
• C. If the statement is a dead person, when it relates to the act of his death.
• D. If the statement is a part of the disputed transaction.