A Wire's Diameter Decreases Linearly from D_i to D_f =

Multiple Choice

A wire's diameter decreases linearly from d_i to d_f = d_i/2. If the electron drift velocity at the other end of the wire is v_i, then the drift velocity at the end whose diameter is d_i/2

A) decreases by a factor of 2.
B) increases by a factor of 2.
C) increases by a factor of 4.
D) remains the same.