A. It is better to avoid using navigational attributes from a query performance point of view
B. If a navigational attribute is used in an aggregate, the aggregate needs to be adjusted every time there is a change in the values of this attribute
C. An attribute included as a characteristic in the InfoCube has the same effect as being used as a navigational attribute in the cube
D. A navigational attribute can be made to display an attribute without removing data from the InfoCube