A certain laboratory experiment requires an aluminum wire of length of 34.0 m and a resistance of 2.10 Ω at 20.0°C. What diameter wire must be used? (The resistivity of aluminum at 20.0°C is 2.65x10^-8 Ω*m).

A) 1.25 mm
B) 2.57 mm
C) 3.98 mm
D) 5.63 mm