Which of the following would describe an opinion leader from a marketing perspective？

Which of the following would describe an opinion leader from a marketing perspective？
A.Media commentators who have a large audience
B.A person of high standing in the community
C.A reference group member who provides relevant and influential advice
D.Your one-month-old baby sister
正确答案：Media commentators who have a large audience；A person of high standing in the community；A reference group member who provides relevant and influential advice