The specific resistance of manganin is 50×10⁻⁸ Ωm. The resistance of a manganin cube having length 50 cm is
A.10⁻⁶ Ω
B.2.5×10⁻⁵ Ω
C.10⁻⁸ Ω
D.5×10⁻⁴ Ω