The rate of impulse conduction is greater in what type of fibers? In type A, B

The rate of impulse conduction is greater in what type of fibers? In type A, B or C fibers.

A is the fastest because the diameter is large and it's mylinated (transmits proprioception; balance. Aalpha is the fastest of all A types)
then B fibers and C fibers are the slowest (they transmit pain sensation)