心室肌细胞动作电位3期复极是由于

A、<p><span lang="EN-US" style="font-size: 10.5pt; font-family: 宋体;">Na⁺</span><span style="font-size: 10.5pt; font-family: 宋体;">内流</span></p>

B、<p><span lang="EN-US" style="font-size: 10.5pt; font-family: 宋体;">Cl^-</span><span style="font-size: 10.5pt; font-family: 宋体;">内流</span></p>

C、<p><span lang="EN-US" style="font-size: 10.5pt; font-family: 宋体;">K⁺</span><span style="font-size: 10.5pt; font-family: 宋体;">外流</span></p>

D、<p><span lang="EN-US" style="font-size: 10.5pt; font-family: 宋体;">Ca²⁺</span><span style="font-size: 10.5pt; font-family: 宋体;">内流</span></p>

E、<p><span lang="EN-US" style="font-size: 10.5pt; font-family: 宋体;">K⁺</span><span style="font-size: 10.5pt; font-family: 宋体;">内流</span></p>