单选题 In the passage, the author is primarily concerned with

• (A) searching for an accurate method of determining whether the universe is finite or infinite
• (B) discussing problems and possibilities involved in providing a definite picture of the shape of the universe
• (C) declaring opposition to the notion that spherical geometry is a possible model for the shape of the universe
• (D) criticizing discredited theories about the possible topologies of the universe
• (E) refuting the idea that there is no way to tell whether the universe is finite and if so what shape it has