During a cardiovascular assessment of an 80-year-old adult, a nurse should consider which of the following as expected findings?

A. Hormonal changes can occur, but they typically do not cause significant vasodilation or hypotension in the elderly. B. Atrophy of the muscles causing venous insufficiency. While venous insufficiency can occur in aging, muscle atrophy is not the primary factor in this issue. C. Peripheral blood vessels become more rigid producing a rise in systolic blood pressure. This is a common and expected finding in the elderly due to arteriosclerosis, leading to increased systolic blood pressure. D. The inferior vena cava does not typically narrow with age, and varicosities are more likely due to vein elasticity changes, not narrowing.