有如下程序：
#include＜iostream＞
#include＜string＞
using namespace std;
class MyBag
public:
MyBag(string br,string cr):brand( br), color(cr)++count;
～MyBag()--count;
static int GetCount() return count;
pnvate:
string brand,color;
static int count;
;
int main()
MyBag one("CityLife","Gray"),two("Micky","Red");
cout＜＜MyBag::CetCount();
return 0;

若程序运行时的输出结果为2，则横线处缺失的语句是______。

A．int count=0;
B．static int count=0;
C．int MyBag::count=0;
D．static int MyBag::count=0;