When a mass m is connected individually to two springs S1 and S2, the oscillation frequencies are ν1 and ν2. If the same mass is attached to the two springs as shown in Fig. 14.3, the oscillation frequency would be
(a) ν1 + ν2.
(b) √v21 + v22
(c) (1/v1 + 1/v2)-1
(d) √v21 - v22 .