A 17-year-old African American male presents for a pre-participation physical before track season. A harsh systolic murmur is heard at the second right intercostal space. He denies ever experiencing chest pain, dizziness, or difficulty breathing. Which of the following would be expected on further workup?
(A) T wave inversion on ECG
(B) Laterally displaced PMI on palpation
(C) Weak femoral pulses compared to brachial pulses
(D) Increased intensity of the murmur with Valsalva maneuver
(E) Increased intensity of the murmur with squatting