A 440-Hz tuning fork is held over the open top of a glass test tube held vertically. Water is added to the tube until the air column inside it is in resonance with the vibrations of the tuning fork. When this occurs, the air column is 190 mm long. What is the speed of sound in the laboratory?
a) 334 m/s
b) 345 m/s
c) 352 m/s
d) 355 m/s