All communications, notices and consents provided for herein shall be in writing and be given in person or by means of facsimile (with request for assurance of receipt in a manner typical with respect to communications of that type and confirmation by mail), by overnight courier or by registered or certified mail, and shall become effective: (a) on delivery if given in person; (b) on the date of transmission if sent by facsimile; (c) one (1) Business Day after delivery to the overnight service; or (d) four (4) Business Days after being mailed, with proper postage and documentation, for first-class registered or certified mail, prepaid.