This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Microbiology
A 45-year-old female complains of lower abdominal pain and vaginal discharge. On examination, there is cervicitis along with a mucopurulent cervical discharge. The best approach to isolate the possible causative agent would be 
Select and explain. 
A. Culture chocolate agar supplemented with Haemin, B. Culture on McCoy cells, C. Culture on a bilayer human blood agar, D. Culture on vero cell lines
B: Culture on McCoy cells
Answer: B: Culture on McCoy cells 
Explanation: Sexually transmitted diseases may be present in the following ways: Vaginal discharge, Cervical/urethral discharge due to Neisseria gonorrhoea or Chlamydia trachomatis Genital ulcers etc. The culture for sexually transmitted diseases is done by Irradiated McCoy cells medium Ref: Ananthanarayan and Paniker&;s Textbook of Microbiology, 9th edition; Pg no 675