听力原文：The Weaver Community Center is pleased to announce that we will be adding three n

听力原文：The Weaver Community Center is pleased to announce that we will be adding three new classes for senior citizens this summer. We are adding a new Exercise class designed to give participants a light aerobic workout. The class will be held three times a week for one hour each day. Another new class is our Arts and Crafts class that will introduce seniors to painting as well as teach them how to etch glass. This class will be held twice a week for 90 minutes per class. The third class is a Business class. The Business class will be held once a week with the class being two hours in length. The Business class also has a limited enrollment of 30 people, so please register for this class as soon as possible. Registration fees for the Exercise class and the Arts and Crafts class are $75 per class, or you can register for both for $125. The Business class has a registration fee of $80.

What is the purpose of the announcement？

A．To announce the cancellation of a program.

B．To reveal three new classes being offered.

C．To give senior citizens a discount on classes.

D．To introduce a new community center.