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
Lambda is represented by which of the following? 
Select and explain. 
A. A, B. B, C. C, D. None of the above
C: C
Answer: C: C 
Explanation: The lambda is the meeting point between the sagittal and lambdoid sutures. In the foetal skull, this is the site of the posterior fontanelle, which closes at two to three months of age.