This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastrointestinal tract, Subject name: Pediatrics
Which of the following is not a reliable indicator of dehydration 
Select and explain. 
A. Skin turgor, B. Dry buccal mucosa, C. Oliguria, D. Thirst
A: Skin turgor
Answer: A: Skin turgor 
Explanation: Skin turgor (elasticity) has its limitations when assessing hydration status in the elderly. Reference: GHAI Essential pediatrics, 8th edition