Please answer the following question: Write a multi-choice question for the following article, with the given choices and answer: Article: The dog, called Prince, was an intelligent animal and a slave to Williams. From morning till night, he had a number of clear duties, for which Williams had patiently trained him and, like a good pupil, Prince lived for the chance to prove his abilities. When Williams wanted to put on his boots, he would murmur. "Boots" and within seconds the dog would drop them at his feet. At nine every morning Prince ran off to the general store in the village, returning shortly not only with Williams' daily paper but with a packet of Williams' favorite tobacco. A trained gun-dog, Prince had a large soft mouth specially evolved (;) for the sake of carrying hunted creatures, so the paper and tobacco came to no harm, never even showing a tooth mark. Williams was an engine driver, and he had to work at irregular times -- "days", "late days", or "nights". Over the years Prince got to know these periods of work and rest, and knew when his master would leave the house and return and _ If Williams overslept, Prince barked at the bedroom door until he woke. On his return, Williams' slippers were brought to him, the paper and tobacco too. A curious thing happened to Williams during the snow and ice of last winter. One evening he slipped and fell on the icy pavement somewhere between the village and his home. He was so badly shaken that he stayed in bed for three days; and not until he got up and dressed again did he discover that he had lost his wallet containing over fifty pounds. The house was turned upside down in the search, but the wallet was not found. However, two days later, Prince dropped the wallet into Williams' hand. Very muddy, and wet through, the wallet still contained fifty-three pounds. Options: A he had no chance to feel in his pockets B he had thought it was in his house C he was sure his dog could find it D he was ill all the time Answer: A he had no chance to feel in his pockets Question:
Answer:
Williams did not realize his wallet was lost for several days because_.