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
