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: Medicine
Naming component of speech is impaired in all of the following types of aphasia except 
Select and explain. 
A. Broca’s aphasia, B. Wernicke’s aphasia, C. Isolation aphasia, D. Pure alexia
D: Pure alexia
Answer: D: Pure alexia 
Explanation: Naming is intact in pure word blindness and pure word deafness