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: Pediatrics
Which one is not unourable for fetal development- 
Select and explain. 
A. Herpes, B. Rubella, C. Alcohol, D. Tetracycline
A: Herpes
Answer: A: Herpes 
Explanation: Ans. is 'a' i.e., Herpes Intrauterine rubella infection, and maternal use of alcohol and tetracycline can cause IUGR. Herpes simplex can cause intrauterine infection, but it does not cause IUGR.