Nhận biết (M1)

If a planet orbits in close proximity to a star and lacks an atmosphere, the planet can become so hot that magma oceans form on its surface. For three planets that could plausibly harbor magma oceans, the table shows mass, density (expressed as the ratio of the material's volume at its current density to its maximum possible density, with higher numbers indicating lower densities), and surface temperature according to a model that assumes the absence of atmosphere.

Which choice best describes how data in the table for HD 80653 b would likely differ if it had an atmosphere?

• A.

  It would have a mass below 5.6 Earth masses.

• B.

  Its surface temperature would be around 1,400 kelvins.

• C.

  It would have a mass above 5.6 Earth masses.

• D.

  Its surface temperature would be below 2,300 kelvins.