This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
Which of the following indicates severe pancreatitis? 
Select and explain. 
A. APACHE II score >5, B. CRP > 100 mg\/dl, C. Haematocrit > 50, D. Ranson's score >_3
D: Ranson's score >_3
Answer: D: Ranson's score >_3 
Explanation: .Ranson's prognostic criteria On admission: * Old age >55 years * Blood sugar >200 mg% * TC >16,000/mm3 * Serum LDH > 350 IU/L * Serum SGOT > 250 IU/L In 48 hrs: * Base deficit > 4 mEq/L * Serum calcium < 8 mEq/L * Haematocrit : altered by 10% * Aerial O2 (PO2) < 60 mm Hg * Extravascular space fluid loss: > 6 L * Blood urea (BUN) altered > 5 mg% of the normal Total score is 11 Scores up to 5 -- better prognosis 5-7 -- equivocal--but dangerous >7 -- is highly dangerous ref:SRB&;S manual of surgery,ed 3,pg no 620