This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
Select the wrong statement with respect to the variable required to calculate the MELD score 
Select and explain. 
A. The prothrombin time expressed as international normalized Ratio (INR), B. Serum albumin, C. Serum billrubin, D. Serum creatinine
B: Serum albumin
Answer: B: Serum albumin 
Explanation: MELD scoring system (Model for End stage Liver Disease by Dr Patrick Kamath)is a scoring system for assessing the severity of chronic liver disease. This score is now used by the United Network for Organ Sharing (UNOS) and Eurotransplant for prioritizing allocation of liver transplants. It is done using PT INR, serum creatinine and serum bilirubin.It is calculated according to the following formula: MELD = 3.78xln + 11.2xln + 9.57xln + 6.43 In interpreting the MELD Score in hospitalized patients, the 3 month moality is: 40 or more -- 71.3% moality 30-39 -- 52.6% moality 20-29 -- 19.6% moality 10-19 -- 6.0% moality <9 -- 1.9% moalityReference : page 617 SRB's manual of surgery 5th edition