The correct option is A fungi
∙ Red rot of sugarcane is caused by fungi and the mode of transmission is through air and seedlings.
∙ This is one of the most severe diseases of sugarcane.
∙ The symptoms of this disease are the drooping, withering, and finally yellowing of the upper leaves, followed by wilting of the entire crown, and finally plants die in severe cases.
∙ When the disease is not severe, the stem gets blackened and the dead areas extend out from the nodes of the plant.