Correct option is C
✅ (c) Bacteria: • Ratoon Stunting Disease (RSD) in sugarcane is caused by the bacterium Leifsonia xyli subsp. xyli. • This disease is considered one of the most economically significant for sugarcane, leading to yield losses of up to 30%. • RSD is challenging to detect due to the absence of distinct external symptoms; infected plants exhibit stunted growth and reduced vigor. • The bacterium spreads primarily through contaminated cutting tools and infected planting material.