They sold their house because it was a real white elephant. A. an expensive one B. a big one C. a useless one D. a rare find

Option A is incorrect because a white elephant is not necessarily expensive. It could be a valuable possession that is simply difficult to get rid of.

Option B is incorrect because a white elephant is not necessarily big. It could be a small possession that is still difficult to get rid of.

Option D is incorrect because a white elephant is not necessarily a rare find. It could be a common possession that is still difficult to get rid of.