The breaking stress of aluminium is 7.5×10⁷Nm⁻². The greatest length of aluminium wire that can hang vertically without breaking is (Density of aluminium wire is2.7×10³kgm⁻³).
(A) 283×10³m
(B) 28.3×10³m
(C) 2.72×10³m
(D) 0.283×10³m