若有以下程序： #include ＜iostream＞ using namespace std; class A { private: int a; public: A(int i) {a=i; } void disp () {cout＜＜a＜＜","; } }; class B { private: int b; public: B(int j) {b=j; } void disp () {cout＜＜b＜＜","; } }; class C : public B,public A { private: int c; public: C(int k):A(k-2),B(k+2) {c=k; } void disp () {A::disp();B::disp();cout＜＜c＜＜endl; } }; int main() { C obj(10); obj.disp(); return 0; }
A．10,10,10
B．10,12,14
C．8,10,12
D．8,12,10