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Difficulty Level Chart: https://www.coinwarz.com/difficulty-charts/ethereum-difficulty-chart
It would be a or c when she is writing a childerns story
Answer:
An operating system has three main functions: (1) manage the computer's resources, such as the central processing unit, memory, disk drives, and printers, (2) establish a user interface, and (3) execute and provide services for applications software.
They are definitely not heroic characters, so you can rule that out. Definitely dangerous criminals. If you need me to help further I can. Is that a question or an essay?
