Why should you adjust your inside rearview mirror?

• To see as much behind your vehicle as possible.
  Explanation:

  "You must adjust your inside rearview mirror so that it provides the widest possible view of the area behind your vehicle. The rear window should be framed within the mirror to help monitor traffic and improve safety."
• To see as much of the right side of your vehicle as possible.
• To see the passengers sitting behind.
• Both B and C