Can anyone help me figure this out, I don't know who got me pregnant?

My fellow readers please help me. I've been dating two men at the same time for around 6 months. Actually my first boyfriend I've been dating since 2012, I met another guy 6 months ago and I also started dating him but I'm now in a dilemma. I'd s3x with two of them almost at the same time frame and now I'm pregnant. I'd s3x with boyfriend A on August 2nd and had s3x with boyfriend B on August 7th, now I'm 11 weeks pregnant. I plan to help keep the infant I simply don't know which of them I'm supposed to inform I'm pregnant. I don't have any preference. The two could be my baby daddy. Can anyone help me figure this out? Keep your judgements to yourselves please, only serious answers needed.