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: Anatomy
Incus and malleus are derived from: 
Select and explain. 
A. Dorsal end of meckels cartilage., B. Ventral end of meckels cartilage., C. Inferior end of meckels cartilage., D. Any of the above.
A: Dorsal end of meckels cartilage.
Answer: A: Dorsal end of meckels cartilage. 
Explanation: None