In response to a stimulus,Na⁺ and K⁺ channels open,allowing for depolarization.The channels respond independently,with

A)both Na⁺ and K⁺ channels opening simultaneously and both remaining active until the end of the action potential.
B)the K⁺ channel opening first, then the Na⁺ channel opening, and only the Na⁺ channel remaining active until the end of the action potential.
C)the Na⁺ channel opening first, then K⁺ channel opening and only the K⁺ channel remaining active until the end of the action potential.
D)both Na⁺ and K⁺ channels opening simultaneously, with the K⁺ channel closing before the Na⁺ channel.
E)the Na⁺ channel opening first, then the K⁺ channel opening, and both remaining active until the end of the action potential.