Suppose the Aδ Fibers Send Action Potentials at 10 M/sec

Suppose the Aδ fibers send action potentials at 10 m/sec and the unmyelinated C fibers sends them at 2 m/sec. How much time will elapse between first pain and second pain upon accidently dropping a heavy brick on your toe? Assume a total distance of 1.2 m from toe to spinal cord to somatosensory cortex.

A) 25 milliseconds
B) 100 milliseconds
C) 120 milliseconds
D) 480 milliseconds
E) 600 milliseconds