Challenge 1 / 1

Imagine the following property:

#[Column()]
private ?string $city = null;

Which of the following changes would require a database migration?

-#[Column()]
+#[Column(type: Types::STRING)]
private ?string $city = null;

-#[Column()]
+#[Column(type: Types::TEXT)]
private ?string $city = null;

#[Column()]
- private ?string $city;
+ private string $city = '';

-#[Column()]
+#[Column(nullable: false)]
private ?string $city = null;