3SA statement in a document shall be admissible in criminal proceedings as evidence of the fact that the statement was made if—
(a)the document satisfies the conditions mentioned in sub-paragraph (1)(a) and (b) of paragraph 2 above;
(b)the statement is made, whether directly or indirectly, by a person who in those proceedings is an accused; and
(c)the statement, being exculpatory only, exculpates the accused.