—  Look at the sign on the right.            

—  Oh, smoking ____ here.   [ ]

A. doesn't allow    

B. isn't allowed    

C. didn't allow      

D. wasn't allowed

若类A和类B的定义如下：
#include＜malloc.h＞
class A

int i,j;
public:
int geti()

return i;

;
class B:public A

int k;
public:
void make()

k=i*j;

;
则上述定义中非法的表达式是( )。

A．k=i*j;

B．int k;

C．return i;

D．void make();