sqrt27xy^3/sqrt9x

I'm getting 3 answers to this.
yxsqrt3y/x, ysqrt3xy/3x, and 3sqrt3y

Can anyone please tell me which one is correct?

One major problem is that you don't use brackets, so we have no way of knowing the order of operation you want.

let's start at the top

√(27xy^3) / √(9x)
= √(3y^3_
= y√(3y)

None of your answers resemble that.