Two wires are kept tight between the same pair
of supports. The tensions in the wires are in the
ratio 2 : 1. The radii are in the ratio 3 : 1 and the
densities are in the ratio 1 : 2. The ratio of their
fundamental frequencies are -
(A) 1/2 (B) 2/3
(C) 3/4 (D) 4/9