How much can a cow eat Marsh Marigold before becoming sick. Like the dosage amount before they become sick.

Cattle accustomed to high levels of grain in the diet may be able to consume 30-45 pounds of grain with only moderate illness, while animals unaccustomed to heavy grain consumption may be acutely ill and die after eating much smaller amounts. Grain overload is an emergency, as death may occur in 24-72 hours.

Explanation:

it is either c or d and i know for sure it is not a or b

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.