Molybdenosis, a disease in cattle, is caused by an imbalance of Mo and Cu in the diet, when Mo content of the forage is greater than . . . . . . . .

Answer: Option A

Molybdenosis, a disease in cattle, is caused by an imbalance of Mo and Cu in the diet when the Mo content of the forage is greater than 5 ppm.
Molybdenosis is a disease of ruminants, especially cattle, caused by dietary intake of excessive molybdenum with resultant copper deficiency characterized by persistent diarrhea and, especially around the eyes, a fading of coat pigment.