A young female presents with history of dyspnea on exertion. On examination, she has wide, fixed split S2 with ejection systolic murmur (III/VI) in left second intercostal space. Her ECG shows left axis deviation. The most probable diagnosis is:
Total anomalous pulmonary venous drainage Tricuspid atresia Ostium primum atrial septal defect Ventricular septal defect with pulmonary arterial hypertension