Identify the correct statement about the disease caused by Cochliobolus sativus (Bipolaris sorokiniana) Giberella zeae (Fusarium graminearum)

a. The disease is monocyclic and affects only barley, rye, triticale, and ryegrass.

b. The disease affects only plants in colder regions with high precipitation.

c. The disease causes premature death of basal leaves and death in patches.

d. The disease is caused by a pathogen that survives only in the soil and crop residues.