119. A substance breaks down by a stress of

A substance breaks down by a stress of 10⁶ N/m². If the density of the material of the wire is 3×10³ kg/m³, then the length of the wire of the substance which will break under its own weight when suspended vertically, is

(a)  66.6 m                                    (b)   60.0 m

(c)  33.3 m                                    (d)   30.0 m

Answer-c