单选题 Our network security solutions are being used by dozens of merchants at hundreds of locations across the country that support PCI______ requirements.
A. compliance B. controversy C. quiescence D. asseverating

【正确答案】 A
【答案解析】[解析] compliance“遵从，依从；灵活性”；controversy“论争，辩论，论战”；quiescence “静止”；asseverate“郑重声明，断言”。