Which examples correctly use colons? Select two options.

I need to buy: milk, eggs, and bacon.

To whom it may concern:

These islands are on the tour: Aruba, Bonaire, and Curaçao.

Let's all welcome Dimas Guzman: tonight's winner.

We visited: France, Belgium, and Germany.

The two examples that show the correct use of colons are:

1) To whom it may concern:

This salutation is used in formal correspondence and the correct format is to put a colon after the phrase "To whom it may concern"

2) These islands are on the tour: Aruba, Bonaire, and Curaçao.

Colons are used to introduce an item or list of items. In this sentence, the list of islands covered in the tour is introduced.