Question

Which of the following statements about China's computer operating system, OpenKylin, is true?

A OpenKylin is the first closed-source operating system developed by China.
B OpenKylin is based on the Windows operating system and was developed by Microsoft.
C OpenKylin is primarily used in China's space program, but not in industries like finance and energy.
D OpenKylin was developed by a community of approximately 4,000 developers and is based on the Linux operating system.
E UnionTech Software Technology Co Ltd. is the sole developer of OpenKylin.
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