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: Physiology
Frontal lobe syndrome involves 
Select and explain. 
A. Impaired recent memory, B. Emotional instability, C. Attention deficit, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Frontal lobe syndrome : 

Euphoria 
Impaired recent memory
Flight of ideas
Attention deficit