Which elements are used in the UML class diagram?

class, which corresponds to a business entity or object; class with attributes but without operations; relation or associations between classes where the arrowhead defines the direction of dependency; and multiplicities to specify the quantities of relations

class, which corresponds to a business entity or object; class with attributes and operations; relations or associations between classes, which have a different meaning depending on whether they are with or without arrowheads; and multiplicities to specify the quantities of relations class, which is a set of objects that have a similar specification of features, constraints, and semantics; class with operations; relations or associations between classes, where arrowheads indicate the direction of inheritance; and multiplicities to specify the quantities

class, which is a set of objects that have a similar specification of features, constraints, and semantics; class with attributes and operations; relations or associations between classes, which have a different meaning depending on whether they are with or without arrowheads; and multiplicities, which define the number of objects in a class