Placentals and marsupials are two groups of mammals. Placentals are more closely related to each other than they are to any other group of animals, and marsupials are more closely related to each other than they are to any other group of animals. Placental wolves look very similar to marsupial wolves. If you use distance analysis of morphological traits to build a phylogenetic tree that includes humans (a placental mammal), placental wolves, and marsupial wolves, which two groups would you conclude are most closely related