Why is saltatory conduction of myelinated axons more energy efficient compared to non-myelinated ones?

• A. Myelinated axons contain more mitochondria.
• B. Myelin sheath prevents the dissipation of ions across the membrane.
• C. The energy is transmitted through the myelin sheath instead of the axon.
• D. The myelin sheath changes the membrane potential.

Answer: (B)