Pediatrics

A mother brought her 14-year-old boy to the emergency with the complaint of cough with blood in sputum and red coloured urine. On examination his BP was 140/90 mmHg. Investigations showed his hemoglobin is 10 mg/dl and hematocrit is 31%.His urinalysis is suggestive of hematuria and proteinuria. Which of the following is the probable diagnosis?