This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Social and Language Milestones, Subject name: Pediatrics
A baby with tripod position, bi dexterous approach, recognizes strangers and can spell out mono syllable by what age: 
Select and explain. 
A. 7 months, B. 12 months, C. 9 months, D. 10 months
A: 7 months
Answer: A: 7 months 
Explanation: Age of the baby- 7 months Baby can sit in tripod position by 6 months. Bi dexterous approach by 5th month. Monosyllables by 6th month. Stranger anxiety by 7th month