Of course, choose 'C'. Don't be tempted by words like rewards and official; first check whether the signature content is random code and confirm that it will not authorize asset operations. Do not blindly trust those who claim to be official; scams often impersonate official project parties, websites, and communities. If you encounter any official activities, be sure to verify through the official website or channels; always ask first to ensure safety. A signature is not just a simple signature; it may authorize transactions or asset operations, etc. If you are unclear about the consequences of signing, never sign. If you accidentally sign, be sure to disconnect promptly!