【单项选择题】
You are creating a Windows Forms application by using the .NET Framework 3.5  The application requires a form to display a clock.You need to create a circular form to display the clock. Which code segment should you use？（）<br /> <img src="https://img.ppkao.com/2018-08/zhoulian/2018080109295237422.jpg" /><p> You are creating a Windows Forms application by using the .NET Framework 3.5  The application requires a form to display a clock.You need to create a circular form to display the clock. Which code segment should you use？（）<br /> <img src="https://img.ppkao.com/2018-08/zhoulian/2018080109295237422.jpg" /></p>
A、A.A
B、B.B
C、C.C
D、D.D
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