Copy or Move: Which Constructor Runs?

1#include <iostream>
2#include <utility>
3using namespace std;
4 
5class Tag {
6public:
7    Tag() { cout << "default" << endl; }
8    Tag(const Tag& other) { cout << "copy" << endl; }
9    Tag(Tag&& other) noexcept { cout << "move" << endl; }
10};
11 
12int main() {
13    Tag a;
14    Tag b = a;
15    Tag c = std::move(a);
16    Tag d(std::move(b));
17    Tag e(c);
18    return 0;
19}