How Could You Tell a Millipede Apart from a Centipede

How could you tell a millipede apart from a centipede?

A) Millipedes have two pairs of legs per body segment, while centipedes have one.
B) Millipedes catch prey using poison, while centipedes are detritivores.
C) Millipedes have 1000 legs each, while centipedes have 100 legs each.
D) Millipedes bear live young, while centipedes lay eggs.
E) None of the above answers is correct.