Which (if any) of the following statements is false?
A) Odd-integer multiples of the fundamental frequency resonate in an open-closed tube.
B) Quadrupling the sound intensity raises the decibel level by about 6 dB.
C) Increasing the sound intensity by 50% will raise the decibel level by 2.0 dB.
D) The wavelength of 900 Hz sound is 0.378 m.
E) None of these is false.