a. The relationship links two classes. The relationship is weak and when the container class instance is destroyed the contents class instatnce is not destroyed. b. The relationship links two classes. The relationship is very strong and when the container class instance is destroyed the contents class instatnce is destroyed too. c. The relationship links two classes. The relationship is weak and instances of classes are not affected by destroying instance on the other side of relationship. d. The relationship links two classes. The relationship represents a generalization and specialization princip. One class is representing a general description and the second one is detailed