A 24-year-old man presented with exertional shortness of breath (NYHA III) and progressive bluish discoloration of fingertips for 3 years. Physical examination revealed BP 108/50mmHg, HR 68 bpm, O2 sat 68% (room air), central cyanosis and grade III clubbing with an early grade 4/6 systolic murmur prominent along the left upper sternal border and associated with a systolic thrill. A transesophageal echocardiogram (TEE) was performed. Which of the findings below will Unlock the CASE?