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
All of the following statements about toxoplasmosis are true except -a) Oocyst in freshly passed cat's faeces is infectiveb) May spread by organ transplantationc) Maternal infection acquired after 6 months has high risk of transmission.d) Arthalgia, sore throat and abdominal pain are the most common manifestations 
Select and explain. 
A. b, B. c, C. ac, D. ad
D: ad
Answer: D: ad 
Explanation: None