_____ he referred to in his article was unknown to the general reader. [ ]

A. That

B. What

C. Whether

D. Where

下列程序的执行结果是( )。
#include＜iostream.h＞
#include＜stdlib.h＞
class TestClass

public:
intx,y;
TestClass()x=y=0;
TestClass(int a,int b)x=a;y=b;
void disp()

cout＜＜"X"="＜＜X＜＜",y="＜＜y＜＜endl;

;
void main()

TestClass sl(2,3);
s1.disp();

A．x=2,y=2

B．x=3,y=3

C．x=2,y=3

D．x=3,y=2