This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
An 8 week infant can do all the following except: 
Select and explain. 
A. Head control, B. Lift it's head upto horizontal line in ventral suspension., C. Follows red object upto 180 degrees., D. Social smile.
A: Head control
Answer: A: Head control 
Explanation: Head control :3 months Lift it's head upto horizontal line in ventral suspension: 2 months Follows red object upto 180 degrees: 2 months Social smile: 2 months. Ref: Ghai 9 th edition, page 41 to 48.