The double persona that the British used to have is mentioned as evidence that______.A．the

The double persona that the British used to have is mentioned as evidence that______.

A．they used to care about their manners when necessary

B．they have behaved consistently on each occasion

C．they knew nothing about their image in other countries

D．they never paid any attention to their own manners

请帮忙给出正确答案和分析，谢谢！