Which of the Following Correctly Names a Characteristic of Russian

Which of the following correctly names a characteristic of Russian etiquette and customs?

A) Pakistan and the caste system are taboo topics of conversation.
B) Gift giving is a sign of friendship;however,expensive and leather gifts should be avoided.
C) First names are appropriate only after a relationship is well established.
D) People commonly sit side by side rather than facing one another during meetings.
E) The conversation style of the people is loud,animated,lively,and expressive with lots of interruptions.