Electrical impulse travels in a neuron from

• A
  Dendrite $\to$ axon $\to$ axonal end $\to$ cell body
• B
  Dendrite $\to$ cell body $\to$ axon $\to$ axonal end
• C
  Cell body $\to$ dendrite $\to$ axon $\to$ axonal end
• D
  Axonal end $\to$ axon $\to$ cell body $\to$ dendrite