<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:An 88-year-old man is brought to his primary care physician by his son. The patient has been in excellent health his entire life, but in the last few years appears to have grown steadily confused. He frequently calls his son about things that they have already discussed, forgets where he has placed his keys, and recently the patients son noticed several unpaid bills on the patients desk at home. The patient is upset at being dragged into see the physician and claims that everything is fine--he is just getting older. A complete neurologic exam is normal except for significant difficulty with recall tasks. In the course of the medical work-up, you obtain a CT scan and see the findings in figure A. What is the most likely cause of this patients CT findings?? A: Blockage of the cerebral aqueduct, B: Cortical atrophy, C: Increased CSF production, D: Congenital malformation, E: Infection,  <response>: Based on the information provided in the question stem, this 88-year-old man is exhibiting symptoms of progressive cognitive decline including memory loss, confusion, and difficulty with recall tasks. The CT scan shows enlarged ventricles which indicates cerebral atrophy. Cortical atrophy is a common cause of dementia and cognitive decline in the elderly. Enlarged ventricles on CT scan are often seen with cortical atrophy as the brain tissue shrinks away leaving more space for cerebrospinal fluid CSF. The other answer choices do not fit with the clinical presentation and imaging findings described.B: Cortical atrophy 