A 59-year-old male presented with palpitation, weakness, seated<br/>aspiration, and a diagnosis of chronic congestive heart failure. He<br/>was treated with cardiac glycosides. Which of the following is the<br/>reason for the patient's use of cardiac glycosides() A: Directly activating inhibitory porton pump B: Inhibit H+-K+-ATPase C: Directly excite the heart D: Inhibit Na+-K+-ATPase E: Prolong the opening time of calcium channel