Which Is True of a Provided Interface Associated with a Port

Which is true of a provided interface associated with a port?

A) identifiers the services that the object owning the port expects of objects connected via that port.
B) represents an interface that must be defined within the classifier that owns the port
C) represents an interface that must be defined in the same package in which the classifier owning the port is defined
D) identifies the services that the object owning the port can offer to other objects connected via that port