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: Unknown
All are true about scrub typhus, except : 
Select and explain. 
A. Causative organism is O. Tsutsugamoshi, B. Vector is trombiculide mite, C. Adult female feeds on vertebrate hosts, D. Tetracycline is the drug of choice
C: Adult female feeds on vertebrate hosts
Answer: C: Adult female feeds on vertebrate hosts 
Explanation: “Mite feeds on serum of warm blood animals only during there larval stage (chiggers) and adult mites feed only on plants”
Scrub typhus :
Caused by O. tsutsugamushi
Transmitted by trombiculid mite which also shows transovarian spread
Clinical features :
Fever, headache, myalgia, cough and GI symptoms.
Classic case includes an eschar, regional lymphadenopathy and a maculopapular rash.