What is/are the difference(s) between the following two sentences? Select all that apply.

The congregation lifted its voices up in song.
The congregation lifted their voices up in song.

Its in the first sentence shows that you want to refer to the congregation as a unit.
Its in the first sentence shows that you want to refer to the separate members of the congregation.
Their in the second sentence shows that you want to refer to the congregation as a unit.
Their in the second sentence shows that you want to refer to the separate members of the congregation.