Task: Question Answering
Input (English): Question: During the aging process there are changes in the different systems and devices, being true that in the cardiovascular system: 
 Options:  <1> Increased sensitivity of the baroreceptors intensifies postural hypotension. <2> The three layers of the blood vessels are affected equally in the aging process. <3> The left ventricle decreases in size. <4> The cycle of diastolic filling and systolic emptying requires less time to complete. <5> The atrioventricular valves suffer from sclerosis and fibrosis.
Output (English): 5