Following the case of Weeks v$.$ United States $(1914),$ that excluded from federal criminal trials evidence that had been illegally seized by federal officials, state officials who may have seized evidence illegally were able to offer the evidence to federal officials under the Silver Platter Doctrine $[$until $1960].$ The gift of evidence from state officials to federal prosecutors:

could be used by federal prosecutors only if no other evidence could be found to prove the same fact.

remained tainted by illegal state activity and could not be admitted in federal court.

was considered perfectly lawful evidence because the federal government had done nothing wrong in at seizing the evidence.

could not be admitted in federal court to prove guilt, but could be used as a basis for additional investigation of criminal activity.

none of the above statements is a correct response.