请对“不动产物权不经登记，不再设立”这一说法进行辨析。

Passage One

Which of the following statements best summarizes the main idea of the passage

A．The sugar industry varies in prosperity among producing countries in Latin America.

B．World sugar producers all suffer from short supply of canes.

C．The world sugar industry is undergoing fatal depression.

D．Major sugar producers have adopted different strategies to combat the sluggish economy.