Sporicidal disinfectant is following except :: (A) Glutaraldehyde, (B) Formaldehyde, (C) Ethylene oxide, (D) Benzalkonium chloride
Answer is D. Sporicidal agents are : 
E – Ethylene oxide 
F – Formaldehyde 
G – Glutaraldehyde 
H – Halogens (moderate action on spores)