Which Is the Incorrect Pairing Between Phase of the Action

Multiple Choice

Which is the incorrect pairing between phase of the action potential of ventricular muscle fibers and event that occurs within the phase?

A) Rising phase: opening of voltage-gated Na⁺ channels
B) Falling phase: closing of K⁺ channels
C) Plateau phase: prolonged opening of voltage-gated Ca²⁺ channels
D) Falling phase: closure of Ca²⁺ channels
E) Rising phase: closure of K⁺ channels