全国商品零售额占第一、二位的城市是

A．广州、上海

B．上海、北京

C．重庆、上海

D．上海、天津

Theresa Green, CFA, manages the portfolio of Ian Knowlden, a client of Tisbury Investments. Green knows that Knowlden is preparing to sell a large position in the Franklin Industries, a relatively small inactively-traded stock listing in a local exchange. Green places a sell order for Franklin Industries in his own account before the Knowlden's order is placed. Green has most likely violated the Standard(s) of Professional Conduct relating to:（）

A. only material non-public information.

B. only priority of transactions.

C. both material nonpublic informationand priority of transactions.