The horse is far superior to the camel in every kind of work except traveling over a desert. The shape of the camel’s feet enables it to walk over the sand of the desert without sinking as deeply as a horse would. Also, a camel can go without water for a period of time in which a horse would die of thirst. The horse is loving and loyal to its owner, but the camel is deceiving and often dangerous. It also has the reputation of being very stupid. On ground which is not soft sand, the horse is faster than the camel. The camel has one valuable characteristic : its hair can be made into tents and clothing. Camel hair is far more useful than horse hair and comes off in such a way that it can easily be gathered.（）
A. It’s often dangerous. B. It’s swift. C. It’s loyal. D. It’s clever.