For java interface; I don't know where is incorrect?

Partial Question 1 0.67/1 pts Which of the following statements about a Java interface are true? Check all that apply. All methods in a Java interface must be private. An interface can have constants All methods in an interface are abstract (as of Java 8) A Java interface defines a set of methods that are required for the implementing class (these can be either implemented by the class or the class can use the default) A Java interface must contain more than one method An interface van have instance variables A Java interface specifies behavior that must be implemented for the class to compile either implemented directly or by utilizing the default.)