According to the tree, statement about gibbons and orangutans is correct?

orangutans evolved from gibbons
they are both ancestors of chimpanzees
gibbons evolved from orangutans
they both evolved from a common ancestor

The correct statement is: they both evolved from a common ancestor. Gibbons and orangutans are both species of great apes that belong to the family Hominidae and they share a common ancestor with other great apes such as chimpanzees and humans.