Julia is trying to place a duckbilled platypus, lizard, bear, and monkey on a phylogenetic tree. she learns that the duckbilled playpus, bear, and monkey are classified as mammals. she also learns that mammals share a common ancestor with reptiles. which additional piece of information will be most to julia to properly build her phylogenetic tree?
a. the platypus has fur like other mammals
b. the platypus lays eggs like a reptile.
c. the platypus does not have fins like a fish.