单选题：请根据下面短文回答第题： A businessman bought some goods at a market in

请根据下面短文回答第题：
A businessman bought some goods at a market in the morning and set out at once for home with all his bags, for he wished to be in his own house before dark.
At noon he rested in a town．When he wanted to go on, the stable-boy (马童) brought his horse, saying :
"A nail(钉子) is wanting, sir, in the shoe of the horse's left front foot．"
"Let it be wanting," answered the businessman, "the shoe will stay on for ten kilometers．"
In the afternoon he arrived at a hotel．The stable-boy came to him again and said, "Sir, a shoe is wanting from your horse' s left front foot．Shall we get a new one?"
"Let it still be wanting," said the businessman, "the horse will be all right for a few kilome-ters more．"
So he rode on, but soon the horse began to limp．It had not limped for long when it fell down and broke its leg．The businessman had to leave the horse and take all the bags on his back, and go home on foot.
"That bad nail," he said to himself, "has made all this trouble．"
Where did the story take place? A．At a market.
B．At the businessman' s house.
C．On the businessman' s way home.