下列代码的输出结果是（ ）。
#include <iostream>
using namespace std;
int main() {
int a = 5;
int b = 10;
a = a ^ b;
b = a ^ b;
cout << "a = " << a << ", b = " << b << endl;
return 0;
}
a = 5, b = 10
a = 5, b = 5
a = 10, b = 5
a = 10, b = 10