Nephritic syndrome

Which of the following sets of clinical findings best characterizes nephritic syndrome?

1: Hematuria, no proteinuria, normal BUN and creatinine
2: Hematuria, proteinuria between 100 mg and 3.5 g protein per 24 hr, acutely elevated BUN and creatinine
3: No hematuria, no proteinuria, acutely elevated BUN and creatinine
4: No hematuria, proteinuria greater than 3.5 g protein per 24 hr, normal BUN and creatinine