Not so sure. We know the liquid will come out of the hole just above the #3 tube. We all agree on that. What does it do after that? If we are looking at this in 2D it will follow down the ramp and onto #2 tube and into #2 cup. If it's 3d or real world, gravity will pull it the to bottom of #3 as soon as it exists the hole and it will follow the tube into #3. I'm still going with 3D and #3 Cup. But it someone else is saying 2d I would agree with #2 cup.Kinda depends on the viscosity of the liquid?