A nurse is collecting data from a 1-week-old infant who is scheduled for a cardiac catheterization. Which of the following locations should the nurse palpate in order to identify the infant's point of maximal impulse? (You will find hot spots to select in the artwork below. Select only the hot spot that corresponds to your answer.)

Point A: Represents the third intercostal space at the right sternal border, which corresponds anatomically to the aortic valve area. This is a key auscultation site used during cardiac assessment to listen for murmurs and abnormalities related to the aortic valve. It is not used for palpation. Point B: Fourth intercostal space at the left midclavicular line and is the correct location for palpating the point of maximal impulse (PMI) in infants and young children. In this age group, the PMI is typically found here due to the more horizontal position of the heart in the chest. Point C: This location is at the 2nd or 3rd intercostal space, which is too high to assess the PMI in an infant. This area is used more for evaluating pulmonic valve sounds, not the apex of the heart.