If a signal is transmitted along a segment of nerve axon measuring 5 x 10⁻⁴ m, how much time is required for the signal to reach the end of the segment, assuming maximal transmission velocity?
A. 2.5 x 10⁻⁶ ms
B. 2.5 x 10⁻³ ms
C. 1 x 10⁻¹ ms
D. 1 x 10⁻¹ s