本贴相关题目 TN-20-SC-20 (WYCV)

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Researchers have announced that the magnetic fields emitted by one manufacturer's security surveillance system, of which type there are 200,000 worldwide, can interfere with pacemakers and that this interaction can bring on missed or irregular heartbeats, nausea, breathlessness, dizziness, and even fainting.

Aof which type there are 200,000 worldwide, can interfere with pacemakers and that
Bof which, worldwide, there are 200,000 of that type, and which can interfere with pacemakers, and
Cof which type there are 200,000 worldwide, they can interfere with pacemakers and
D200,000 of which type exist worldwide, interfering with pacemakers, and
E200,000 of that type existing worldwide and can interfere with pacemakers, and