In a long cylindrical tube , the water level is adjusted and the air column above it is made to vibrate in unison with a vibrating tuning fork kept at the open end . Maximum sound is heard when the air column lengths are equal to

Options

A. `(lamda)/(4),(lamda)/(2),(3lamda)/(4)`
B. `(lamda)/(2),(2lamda)/(2),(3lamda)/(2)`
C. `(lamda)/(2),(3lamda)/(2),(5lamda)/(2)`
D. `(lamda)/(4),(3lamda)/(4),(5lamda)/(4)`

Answer

D