"They vault over technical fixes as fast as the hurdles are erected"（Para. 1)probably mean

"They vault over technical fixes as fast as the hurdles are erected"(Para. 1)probably means that hackers

A．are constantly trying to overcome technical problems.

B．immediately find a way to break into others" computers.

C．get excited to fix technical problems they have faced.

D．tend to install technical barriers in others" computers.

请帮忙给出正确答案和分析，谢谢！

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