This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
[{'content': 'Blood should not be mixed with \nSelect and explain. \nA. Ringer lactate, B. Normal saline, C. Hypeonic saline, D. All of the above', 'role': 'user'}, {'content': "Answer: A \nExplanation: Haemaccel and Ringer lactate contains calcium so should not be mixed with blood as it contains citrate. Blood bank recommendations specify that Ringer's lactate solution (LR) should be avoided while transfusing blood. No significant difference in clot formation between NS and LR with WB or PRBC was found, but the presence of visible clot was increased in the LR-5 group (P = 0.013, WB, and P = 0.002, PRBC). Ref Robbins 9 e pg 566", 'role': 'assistant'}]