Read the following context and choose the best option to answer the question.
Context: Scouty threw up four times yesterday , twice last night , and once this morning . Today I took her to the vet . The first diagnosis was " dehydration " and the second " pancreatitis . " She should be fine ; it 's only mild to the lower ranges of moderate .
Question: Why could n't the animal stay at home ?
Options: 
A. It had started to cry .
B. It would be by itself .
C. None of the above choices .
D. It was n't feeling well .


D