False statement regarding hemodynamic changes occurring during exercise is which of the following:

• A. Venous return is augmented by the pumping action of skeletal muscles
• B. The increased adrenergic nerve impulses to the heart as well as an increased concentration of circulating catecholamines help to augment the contractile state of the myocardium
• C. Venoconstriction in exercising muscles as well as increased cardiac output leads to marked increase in systemic blood pressure
• D. End-diastolic volume increases in the failing heart during exercise