According to Carly Donovan,______.A．half of the Twitter followers of Dell are botsB．most p

According to Carly Donovan,______.

A．half of the Twitter followers of Dell are bots

B．most people believe the followers are human

C．the number of followers is not a real measurement

D．the impact of social media following is reducing

请帮忙给出正确答案和分析，谢谢！