A sonometer wire of density `rho` and radius r is held between two bridges at a distance L apart . Tension in the wire is T. then the fundamental frequency of the wire will be
A. `n=(1)/(2L)sqrt(pir^2//Trho)`
B. `n=(1)/(2L)sqrt(T//pir^2)`
C. `n=(1)/(2L)sqrt(rhoT//pir^2)`
D. `n=(1)/(2L)sqrt(T//pir^2rho)`