What is the purple of the conversation？A．To gather information for the student"s astronomy

What is the purple of the conversation？

A．To gather information for the student"s astronomy class.

B．To write a research paper about a recent discovery in space.

C．To report findings from an astronomers" conference.

D．To get information for the astronomy club.

请帮忙给出正确答案和分析，谢谢！