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: Microbiology
True about peripheral blood smear of plasmodium vivax? 
Select and explain. 
A. Single ring with cytoplasm condensed around in each erythrocyte, B. Mature /old erythrocytes affected, C. Parasitized erythrocytes of same size as normal erythrocytes, D. Only ring and gametocytes are seen
A: Single ring with cytoplasm condensed around in each erythrocyte
Answer: A: Single ring with cytoplasm condensed around in each erythrocyte 
Explanation: Ans. is 'a' i.e.,Single ring with cytoplasm condensed around in each erythrocyte