根据给定的题目和选项，生成一份英语语法测验。


题目：正确使用冠词。
选项：
A. The girl was playing with ball.
B. A girl was playing with a ball.
C. An girl was playing with an ball.
Question: Correct use of articles.
Options: A. The girl was playing with ball. B. A girl was playing with a ball. C. An girl was playing with an ball.

Correct answer: B. A girl was playing with a ball.