How to merge branch M2 into branch C4

Question

I have a branch `master` whose reference is positioned on the commit C3, and a branch `my_branch` whose reference is positioned on the commit M2. My HEAD points to `master`. What will be the result of the command `git merge --no-ff my_branch` ?

Accepted Answer

```bash
C1<-C2<-C3<----C4
         \     /
          M1<-M2
```

Answer

```bash
C1<-M1<-M2<-C2<-C3
```

Answer

```bash
C1<-C2<-C3<-M1<-M2
```

Question from the Git test

How to merge branch M2 into branch C4