This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Ringer lactate true is 
Select and explain. 
A. Cl- - 111, B. Na+ - 45, C. K+ - 5, D. Lactate – 29
D: Lactate – 29
Answer: D: Lactate – 29 
Explanation: • Composition of Ringer Lactate:
– Sodium ion: 130 mmol/L
– Potassium ion: 4 mmol/L
– Chloride ion: 109 mmol/L
– Calcium ion: 1.5 mmol/L
– Lactate ion: 28 mmol/L