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
Regarding HIV transmission to foetus all are true except –a) > 50% risk of transmission to foetusb) Can present as failure to thrivec) Greatest risk of transmission of in perinatal periodd) Cannot be diagnosed 
Select and explain. 
A. b, B. ad, C. ac, D. ab
B: ad
Answer: B: ad 
Explanation: None