level1关于StandardII(A)一段notes的理解 should, market, because, material, customer

耳洞

Notebook 1 p33页Prohibition of all proprietary trading while a firm is in poeeseeion of material nonpublic information may be inappropriate because it may send a signal to the market.(词句中signal意指大概那些市场信号)以及后一句，In these cases, firms should take the contra side of only unsolicited customer trades.整句不太理解这条意思，求教。

334553844

公司掌握内幕消息后，交易则违反道德，不交易则欲盖弥彰相当于告诉别人自己有内幕；于是被动交易