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: Social & Preventive Medicine
Which fungicide is used as a spray for the control of bagassosis – 
Select and explain. 
A. 2% acetic acid, B. 2% formic acid, C. 2% propionic acid, D. 25% phenyl mercury
C: 2% propionic acid
Answer: C: 2% propionic acid 
Explanation: Preventive measures for bagassosis

Dust control → Wet process, enclosed apparatus, exhaust ventilation.
Personal protection → Protective equipment (mask or respirators with mechanical filters).
Medical control  → Pre-placement examination and periodic medical check-up.
Bagasse control → Keeping moisture above 20% and spraying the bagasse with 2% propionic acid, a widely used fungicide.