Acute post streptoccocal GN

7 yr old child with irritability and low urine output, BP 150/90, protein ++, RBC ++. Next step is??

a. anti HTN
B. i/v methyprednisolone
c. low protein, low salt and inc water intake
d. low protein, high carbohydrate ,low salt and fluid restriction
e. high protein, low salt, low carbohydrate and dec water intake