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
Which of the following cannot be reliably used for handwashing? 
Select and explain. 
A. Chlorhexidine, B. Isopropyl alcohol, C. Lysol, D. Cresol
C: Lysol
Answer: C: Lysol 
Explanation: These can be reliably used for handwashing:
i. Chlorhexidine (Savlon)
ii. Alcohols (as spirit) - Isopropyl alcohol (preferred), ethyl alcohol
iii. Iodine
iv. Cresol
v. Chloroxylenol (Dettol)
vi. Hexachlorophene
vii. Tincture iodine