It's( )when you ask a foreigner about his or her age,salary and religion.

It's( )when you ask a foreigner about his or her age,salary and religion.
A stupid
B friendly
C considerate
D impolite

It's mix ?? It's about It's time... it's time It's raining it impossible和it's impossible I think it's right ,( )it? it's fun 还是it 's funny it's是否等于it is 或it was It's All Vain