There may be more than ONE $(1)$ correct answers. Select all that apply. Which of the following statements are true about an immutable object?

Group of answer choices

An immutable object contains no mutator methods.

All properties of an immutable object must be of primitive types.

All properties of an immutable object must be private.

An object type property in an immutable object must also be immutable.

The contents of an immutable object cannot be modified.