Use the Following Figure and Description to Answer the Question

Multiple Choice

Use the following figure and description to answer the question. Humans, chimpanzees, gorillas, and orangutans are members of a clade called the great apes, which shared a common ancestor approximately 15 million years ago.
Referring to the phylogenetic tree in the figure, which of the following pairs of apes are most closely related?

A) gorillas and chimpanzees
B) humans and Australopithecus
C) humans and gorillas
D) orangutans and chimpanzees