单项选择题

Complimentary Dow Jones News
Get Dow Jones Real-Time News for Investors at no charge with your Scottrade, account! It’s the same up-to-the-minute news and information that more than 300,000 financial professionals use each day to make investment decisions and stay ahead of market changes. Dow Jones Real-Time News for Investors provides extensive, high-quality coverage of companies, markets and events, including:
·Stock Market News--What’s moving and why
·Company Announcements
·Economic Indicators
·Credit Market News
·International, Regional and Industry News
Some brokers charge $ 30 a month for this valuable tool. At Scottrade, you’ll get the same access at no charge! Just one more reason to choose Scottrade!
The purpose of the advertisement is ______.

A.encouraging people to use Scottrade account
B.introducing the importance of Dow Jones News
C.calling people’s attention to stock exchange
D.hiring brokers