The ARM microprocessor has been used in various product markets such as industrial control, consumer electronics, communication systems, network systems, wireless systems, etc. Which of the following description about the characteristics of the ARM architecture is wrong?

The ARM microprocessor has been used in various product markets such as industrial control, consumer electronics, communication systems, network systems, wireless systems, etc. Which of the following description about the characteristics of the ARM architecture is wrong?
A .  Support 16-bit, 32-bit and 64-bit multiple instruction sets, which can be well compatible with various application scenarios from IOT, terminal to cloud
B .  Using complex instruction set, high processing efficiency
C . A large number of registers are used, most of the data operations are completed in the registers, and the instruction execution speed is faster
D . The same function and performance occupy a small chip area, low power consumption, higher integration, and more hardware CPU cores have better concurrent performance

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Answer: B