单选题：有如下类声明： classMyBASE{ intk; public: voidset（intn）{k=n;} intge

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  • 题目类型：单选题
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题目内容：
有如下类声明：
classMyBASE{
intk;
public:
voidset（intn）{k=n;}
intget（）const{returnk;}
};
classMyDERIVED:protectedMyBASE{
protected:
intj;
public:
voidset（intm,intn）{MyBASE::set（m）;j=n;}
intget（）const{returnMyBASE::get（）+j;}
};
则类MyDERIVED中保护的数据成员和成员函数的个数是（　　） A．4
B．3
C．2
D．1
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