Which of the following is INCORRECT about Mr. Camisani Calzolaris recent study？A．He invest

Which of the following is INCORRECT about Mr. Camisani Calzolaris recent study？

A．He investigated the followers of big brands on Twitter.

B．He compared computer-generated fans with inactive users.

C．He needed to judge whether a follower is real.

D．He used the number of articles posted as a research standard.

请帮忙给出正确答案和分析，谢谢！