When originally classified, whales and hippopotamuses were placed into different orders.
Molecular analysis recently suggested that whales (Order Cetacea) and hippopotamuses (Order Artiodactyla) are extremely closely related, sharing a recent common ancestor.
This has led some taxonomists to create a new phylogenetic tree that puts the two orders together into a single clade. It is still unclear as to whether the whales diverged from hippopotamuses before or after the divergence of other species in the Order Artiodactyla.
When analyzing the two new possible phylogenetic trees above, which of the following is an accurate inference?