People in different countries have different ( ）about etiquette.A minds B ideas C questions

B为什么选b？指不同国家不同文化的人对礼仪礼节的不同看法那A呢？没见过这样的短语I have no idea about how to prepare those cuttlefish and lobsters. 我对如何烹调那些乌贼和龙虾毫无概念。If you have any idea about that, I wish you would tell me. 如果在这件事上你有任何想法，但愿你能告诉我。