premise: Within ten (10) calendar days of written request by the Disclosing Party, the Receiving Party shall return to the Disclosing Party, or at the Disclosing Party's option, shall destroy, any physical and written records containing such Confidential Information, whether such physical and written records were supplied or made available by the Disclosing Party or were prepared by the Recipient or its Representatives from information supplied or made available by the Disclosing Party. 