Copper Has $8.5 \times 1028$ Current-Carrying Electrons Per $\mathrm{m} 3$ a Copper Wire of Radius

Copper has $8.5 \times 1028$ current-carrying electrons per $\mathrm{m} 3$ . A copper wire of radius $0.15 \mathrm{~mm}$ carries a current of $17 \mathrm{~mA}$ . What is the average drift velocity for the electrons?

A) $2.7 \times 10^{-9} \mathrm{~m} / \mathrm{s}$
B) $18 \times 10^{-6} \mathrm{~m} / \mathrm{s}$
C) $56 \times 10^{-6} \mathrm{~m} / \mathrm{s}$
D) more information is needed for this calculation