[QA] There has been a hot debate among the scientists relating to the pros and cons of using robotic probes to study distant objects in space.

Question:

There has been a hot debate among the scientists relating to the pros and cons of using robotic probes to study distant objects in space.

• A.
  problems and solutions
• B.
  causes and effects
• C.
  solutions and limitations
• D.
  advantages and disadvantages