(A) 10 decibel (dB) increase in sound is equal to 10 fold increase in sound intensity
(B) 20 dB increase in sound is equal to 20 fold increase in sound intensity
(C) Loudness is the human perception of sound intensity
(D) The audible sound range is between 20 Hz to 20 kHz
(E) Sound below 20 Hz is called ultrasound while above 20 kHz is called infrasound
Choose the correct answer from the options given below :