According to Paragraph 2 some organizations check their systems to find out[A] whethe
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According to Paragraph 2， some organizations check their systems to find out
[A] whether there is any weak point.
[B] what sort of data has been stolen.
[C] who is responsible for the leakage.
[D] how the potential spies can be located.
请帮忙给出正确答案和分析，谢谢！