单选题

请将下列构造函数补充完整，使得程序的运行结果是5

Question

请将下列构造函数补充完整，使得程序的运行结果是5

#include<iostream>
using namespace std
class Sample{
	public:
		Sample(int x){
			________
		}
		~Sample(){
			if(p) delete p
		}
		int show(){
			return *p
		}
	private:
		int*p
}
int main(){
	Sample S(5)
	cout<<S.show()<<endl
	return 0
}

A. *p=x

B. p=new int(x)

C. *p=new int(x)

D. p=&x