有下列程序，在横线添加；
#include＜iostream＞
using namespace std;
class TestClass

public:
TestClass(int n)number=n;
______//拷贝构造函数
～TestClass()
private:
int number;
;
TestClass fun(TestClass p)

TestClass temp(P);
return temp;

int main()

TestClsss obj1(10),obj2(0);
TestClass obj3(obj1);
obj2=fun(obj3);
return 0;

A) TestClass(TestClass &other)number=other.number;
B) TestClass(TestClass other)number=other.number;
C) TestClass(TestClass &other)number;
D) TestClass(&other)number=other.number;