Identify type of UML relationship(s) between classes KLM and ABC

What should be the relationship between class ABC and KLM ? Whether it should be composition, aggregation or association or any other relationship.

#include<iostream>
using namespace std;
class ABC
{
    int x;
public:
    ABC() { cout<<"1\t"; }
    ~ABC() { cout<<"2\t"; }
};
class KLM
{
    int  y;
    ABC *O1;
public:
    KLM() { cout<<"3\t"; }
    ~KLM() { cout<<"4\t"; }
};
int main()
{
    KLM *O4=new KLM();
    ABC a1;
    delete(O4);

    return 0;
}