Among the following options, which are the current difficulties encountered by the Internet of Things ()? (multiple choice)

Among the following options, which are the current difficulties encountered by the Internet of Things ()? (multiple choice)
A . Multi-sensor collaborative management is complicated
B . High performance and power consumption requirements in video scenarios
C . The communication protocol between terminals is complex and diverse
D . The development language programming efficiency is low

Answer: A,B,C,D