[单选题]
The diagram below represents 5 different stant fv49f.moxlh :g*i0fding sound waves.jkbd w5)/ffu z)20oj aa 8hhi set up inside of a set bj2fazk iow d 0 j/h8f5.a)hu)of organ pipes 1 meter long.
01.25: What is the length of the longest wavelength shown?
