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 of the following statement is true about mumps? 
Select and explain. 
A. Salivary glands involvement is limited to parotid, B. The patient is not infectious prior to clinical parotid enlargement, C. Mumps orchitis frequently leads to infertility, D. Meningoencephalitis can precede parotitis
D: Meningoencephalitis can precede parotitis
Answer: D: Meningoencephalitis can precede parotitis 
Explanation: Mumps may involve parotid, submandibular salivary gland.
Patient is infectious 7 days before to 7 days after onset of parotid swelling.
Mumps orchitis can lead to atrophy of testis, but does not frequently cause infertility.
Meningoencephalitis may occur before, along with or following the parotitis.