Hmm, I'm a bit unsure about this one. Widespread data destruction on both the computer and peripherals could point to a few different types of malware. I'll have to think it through.
I'm a bit unsure about this one. The options seem to cover a range of DRM-related tasks, but I'm not entirely sure which ones are specifically available in the Migration utility. I'll need to think this through carefully.
Okay, let me walk through this step-by-step. The User calls Contract A, and Contract A then calls Contract B. So in Contract B, msg.sender should contain the address of Contract A, not the original User. I'm pretty confident that B is the right answer here.
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