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[单选题]Which of the following is incorrectly described about inheritance and combination?

AInheritance is usually better than combination6Np答案窝(daanwo.com)-大学生作业答案及考资分享平台

BInheritance is an is-a relationship6Np答案窝(daanwo.com)-大学生作业答案及考资分享平台

CCombinations are has-a relationships6Np答案窝(daanwo.com)-大学生作业答案及考资分享平台

DCombination is implicit, inheritance is explicit6Np答案窝(daanwo.com)-大学生作业答案及考资分享平台

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