I have a power steering leak that I want to fix, but I don't know the part number for the hose. It's the hose that runs right from the P/S reservoir down to the front of the engine bay, into what I assume is the P/S pump. On parts websites when I put in my make, model, and year, 3 different options come up:

1985-1990 Volvo 740 - Beck Arnley P/S Pressure Hose Part Number: 109-3050
1989-1990 Volvo 740 - Edelmann P/S Pressure Hose Part Number: W0133-1660366
1985-1992 Volvo 740 - Edelmann P/S Pressure Hose Part Number: W0133-1621789

All are apparently appropriate for my car, which is a 1990 Volvo 740 GLE 2.3 16V.

Now, are these three different hoses? Or are they all appropriate for my application?

Thanks in advance.