H-1B transfer to multiple company at a time

Hi ,

I was worked for [b]employer A[/b] then i resigned job and joined to [b]employer B.[/b]



Employer B transferring my visa by normal process.[b] I got new receipt number only but not yet approved (still process).[/b]



here my question  is ,in this time



[b]1. can i go back and work for employer A ?is it possible ?[/b]



[b]2. I got new offer from employer C . Can I transfer my visa for employer C by premium process ?[/b]



thanks
  1. YES, if u have a valid visa

  2. U can do this too