I think at this stage in the game you owe it to Company A and yourself to pick option C. It's not worth burning bridges, especially in technology, where you nev

I think at this stage in the game you owe it to Company A and yourself to pick option C. It's not worth burning bridges, especially in technology, where you never know who you are going to work with next. You made the commitment now stick it out for a minimum of 6 months. If you aren't satisfied with your growth at that point then go and look for other jobs. In the future, I would recommend not accepting an offer if you have any decisions for other jobs still pending. Once you get the other offer you should be transparent about your situation. It may give you a little bit more leverage for negotiation, or the company might say now or never, but you won't be any worse off for doing so. Just my 2 cents.