This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S., Subject name: Medicine
What does 'phantoguesia' mean? 
Select and explain. 
A. Decreased sensation of taste, B. Disruption of taste sensation, C. Increased sensation of taste, D. Alternation of taste sensation
D: Alternation of taste sensation
Answer: D: Alternation of taste sensation 
Explanation: (D) Alternation of taste sensation # Phantoguesia: often metallic or salty taste in the mouth for which no external stimulus can be found