it could be either of yours

At 54 seconds, Bridget says:
Owing to these relations, the resulting life form currently residing in my tummy could actually, in fact, be either of yours.

Here, she's confessing that she's pregnant with a baby who could be the child of either Jack or Mark, the two men she's talking to.

In this context, can she say any of these instead?
(1) Owing to these relations, the resulting life form currently residing in my tummy could actually, in fact, be either of your babies.
(2) Owing to these relations, the resulting life form currently residing in my tummy could actually, in fact, be either of your baby.
(3) Owing to these relations, the resulting life form currently residing in my tummy could actually, in fact, be either yours or yours. [The first yours meaning Jack's, the second Mark's]