A 62 year old from Wales presently in US develops oliguria and peripheral edema over a period of weeks. Urinalysis reveals hematuria and proteinuria; examination of the urinary sediment reveals red cell casts. Renal biopsy shows many glomerular crescents. This presentation is mostsuggestive of which of the following conditions?: (A) Rapidly progressive glomerulonephritis, (B) Diabetic nephropathy, (C) Hypeensive nephropathy, (D) Lupus nephritis
Answer is A. Rapidly progressive giomeruloephritis