In our hearts , we were afraid it had not . The vet on graveyard shift was the same one who had seen him the first time . When she looked at the numbers and found out that he had already had the surgery , she got tears in her eyes .

Based on the preceding passage, choose your answer for question Why was the vet so upset ?
pick from the following. 1). None of the above choices .. 2). The vet had to work the early morning shift .. 3). The procedure had not worked .. 4). The vet was n't paid ..
The answer is:
3).