Who is he in the following sentence?

Jack killed John, but he was not the only victim.

OPTIONS:
- Jack
- John
John
Vem är han i följande mening? Jack dödade John, men han var inte det enda offret. ALTERNATIV: - Jack - John
Who is he in the following sentence? Jack killed John, but he wasn't the only victim. ALTERNATIVE: - Jack - John
John
John