单选题 According to the passage, extending solar record is important for which of the following reasons?

• (A) It would determine the extent to which sunspots plays a role in increasing the sun's irradiance.
• (B) It would help establish whether the data supporting the existence of the Maunder Minimum is reliable.
• (C) It would allow scientists to establish whether the warming trends owe to industrialization or to natural factors existing prior to industrialization.
• (D) It could possibly corroborate the information on sunspots provided by satellites.
• (E) It would establish that sunspots do indeed appear in regular and periodic cycles.