A sonometer wire vibrates with frequency n1 in air under suitable load of specific gravity ‘σ’. When the load is immersed in water, the frequency of vibration of wire n2 will be
(A) n1\(\sqrt\frac{σ +1}{σ}\)
(B) n1\(\sqrt\frac{σ -1}{σ}\)
(C) n1\(\sqrt\frac{σ}{σ+1}\)
(D) n1\(\sqrt\frac{σ}{σ-1}\)