This Agreement may be executed in one or more counterparts by some or all of the parties hereto, and (i) each such counterpart shall be considered an original, and all of which together shall constitute a single Agreement, (ii) the exchange of executed copies of this Agreement by facsimile or Portable Document Format (PDF) transmission shall constitute effective execution and delivery of this Agreement as to the parties for all purposes, and (iii) signatures of the parties transmitted by facsimile or Portable Document Format (PDF) shall be deemed to be their original signatures for all purposes.  The individuals signing this Agreement on behalf of the parties hereto represent and warrant that they are duly authorized to do so.