A young female presents with history of dyspnoea on exertion.On examination,she has wide,fixed split S2 with ejection systolic murmur(III/IV) in left second intercostal space.Her EKG shows left axis deviation.The most probable diagnosis is:

• A. Total anomalous pulmonary venous drainge
• B. Tricuspid atresia
• C. Ostium primum atrial septal defect
• D. Ventricular septal defect with pulmonary arterial hypertension