A class that is used as the basis for inheritance is known as what type of class?

Freezing rows and/or columns:

A) enables you to adjust settings to control how the worksheet will print. B) keeps them visible as you scroll through a worksheet. C) keeps all worksheets on the screen. D) collects structured, related data in columns and rows.

What will be the value of x after the following statements are executed?

``` int x = 10; for (int y = 5; y < 20; y +=5) x += y; ``` a. 25 b. 30 c. 50 d. 40