What are my options after H1B COS Denial

Hi I am in US since 2 Years on L1A for Company A. My H1B COS Petition was filed for 2012 by a company B which has got denied after RFE response. Can you please suggest what options I have.

  1. Can I continue working for my current company A on L1A.

  2. Company B is planing to file MTR, denial reason is because of LCA and I 129 having different work location. What are the chances getting this approved.

  3. Can I find some other company who can resuse 2012 quota to file a fresh petition against the denied receipt number or Quota.

If any other option you can suggest which can still be helpful getting H1B.