This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
Scutum is? 
Select and explain. 
A. Bony pa of outer attic wall, B. Bony pa of inner attic wall, C. Cailaginous pa of outer attic wall, D. Cailaginous pa of inner attic wall
A: Bony pa of outer attic wall
Answer: A: Bony pa of outer attic wall 
Explanation: Scutum forms bony pa of lateral attic wall. Reference: Dhingra 6th edition