This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluid & Electrolyte, Subject name: Surgery
Initial fluid of choice in treatment of hypovolemia in patients presenting after trauma is - 
Select and explain. 
A. Colloid, B. Blood, C. Plasma expanders, D. Crytalloid
D: Crytalloid
Answer: D: Crytalloid 
Explanation: Ans. is 'd' i.e., Crystalloid * Initial fluid of choice in treatment of hypovolemia in patients presenting after trauma crytalloid. Particularly in patients presenting after truam normal saline is preferred over hartmans solution.