By the end of the 19th century the colonial possessions of Britain covered about______of t

By the end of the 19th century the colonial possessions of Britain covered about______of the worlds population and area, which was called the empire "on which the sun never sets".

A．one third

B．a quarter

C．one fifth

D．one sixth

请帮忙给出正确答案和分析，谢谢！