单项选择题

Given：

What is the result？（）

A.test
B.Exception
C.Compilation fails.
D.NullPointerException

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单项选择题

A.All of the assert statements are used appropriately.
B.Only the assert statement on line 12 is used appropriately.
C.Only the assert statement on line 15 is used appropriately.
D.Only the assert statements on lines 15 and 18 are used appropriately.

单项选择题

Given： What is the result？（）

A.23
B.234
C.235
D.Compilation fails.