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: Dental
An 8 month old female infant has history of kernicterus. On sudden movement of the  baby’s neck, the following features were seen - abduction and extension of the arms, opening of hands and adduction of arms in front of the body.
Which lobe of the baby’s brain is affected? 
Select and explain. 
A. Frontal, B. Temporal, C. Parietal, D. Occipital
A: Frontal
Answer: A: Frontal 
Explanation: Primitive reflexes, also known as frontal release signs, can be normal in the adult population. Multiple frontal release signs observed on neurological examination correlate with frontal lobe brain pathology, including Alzheimer disease, multiple sclerosis, and schizophrenia.