某同学在家中进行化学实验，按照图1连接好线路发现灯泡不亮，按照图2连接好线路发现灯泡亮，由此得出的结论正确的是

A．NaCl是非电解质

B．NaCl溶液是电解质

C．NaCl溶液中水电离出大量的离子

D．NaCl在水中电离出可以自由移动的离子

Bill Kimm, CFA owns an asset management firm with offices downtown. To minimize rent expenses, each year Bill ships the previous year’s research records to a nearby warehouse. There, the reports are digitized and stored in both electronic and hard-copy forms. After five years, all paper copies are destroyed and only electronic copies are retained. Are Bill’s record-retention procedures in compliance with the CFA Institute Standards of Practice()

A. Yes.

B. No, because he did not retain the copies in his offices.

C. No, because he failed to retain the original documents.