When do we pray the post-Jumu'ah sunnah at home or in the mosque? Is it two rak'ahs or four?

The Shaykh : The post-Jumu'ah sunnah: one has the choice between praying two rak'ahs and praying four. For both the two and the four, one may pray them in the mosque or at home, and this is better. There is no difference between two rak'ahs and four rak'ahs. Praying the two in the mosque is permissible, and praying the four in the mosque is permissible. Praying the two at home is better, and praying the four at home is better. Is that clear?

The questioner : Is that clear?