A 42-year-old man living with HIV/AIDS with poor disease control presented to our facility with worsening shortness of breath, bipedal edema, massive ascites, and non-productive cough. Patient reported that they were treated for tuberculosis twice before. HR 89 bpm with BP 117/81 mmHg. Grade 3/6 holosystolic murmur heard over the mitral area. ECG showed atrial fibrillation and small QRS complex amplitude globally. Based on the echocardiogram provided, which answer is the most likely diagnosis to Unlock the CASE?