The Japanese Puffer Fish, a Food Delicacy, Contains the Chemical

The Japanese puffer fish, a food delicacy, contains the chemical tetrodotoxin (TTX) . If too much TTX is ingested, this can prevent breathing because TTX:

A) binds to and activates voltage-activated K⁺ channels.
B) binds to and activates voltage-activated Na⁺ channels.
C) blocks the passage of Ca⁺ through voltage-activated Ca⁺ channels.
D) blocks the passage of Na⁺ through voltage-activated Na⁺ channels.
E) blocks the passage of K⁺ through voltage-activated K⁺ channels.