<prompt>  A child suffering from acute diarrhoea is brought to the casualty and is diagnosed as having severe dehydration with pH of 7.23. Serum Na-125, Serum K-3, HCO3 16. The best I.V. fluid of choice is -3 SalineN3 Saline 10 dextroseNormal salineN3 saline 5 dextrose 