The compositional similarity of the Moon and Earth`s mantle and the recognized importance of large impacts in the
early solar system, together with the large angular momentum present in the Earth-Moon system, have led to
the theory that the Moon formed after a Mars-sized object collided with the growing Earth. Simulations predict that much of the preexisting layered structure of Earth was obliterated and much of the impacting material thrown back into orbit, creating a post-impact accretion disk surrounding proto-Earth. Simulations also predict that the Moon
consists primarily of material from the impacting object, and not material from proto-Earth. This computational model is challenged, however, by a remarkable similarity in oxygen isotopes found between lunar and Earth rocks, raising questions about the partitioning of material during impact.
Which of the following can be inferred from the passage about "the theory"?
AIt is not contradicted by the similarity in oxygen isotopes found between lunar and Earth rocks.
BIt is based primarily on the large angular momentum of the Earth-Moon system.
CIt has been undermined by recent computer simulations of an object colliding with proto-Earth.
DIt is unable to account for the formation of an accretion disk around proto-Earth.
EIt is difficult to reconcile with the compositional similarity of the Moon and Earth`s mantle.
저는 B아니면 E가 답이라고 생각했어요. 근거는 각각 색칠한데서 잡을 수 있구요.
근데 정답은 A네요.
오히려 the theory를 challenge하는게 similarity in oxygen isotopes between lunar and earth rocks 아닌가요?
그럼 contradict되어야하는데, not contradict가 어떻게 답이 되는건지요..?
정답이 A인 이유와, B와E가 답이 아닌 이유가 궁금합니다!