I stay only if you go
P: I stay
Q: You go
It is given in the form of P if Q which is equivalent to (P→ Q), we can write that statement in this way,
If I stay then you go.
Along with that, we know that converse of (P→Q) is (Q→P)
we can write that converse in the English language is If you go then I stay and we can write this (Q→P) form to Q if P form.
which means If you go then I stay is equivalent to I stay if you go.
So the answer is option A