The x-axis represents distance from the Sun (AU), and the y-axis represents density (g/cm³).

The scatterplot above shows the densities of seven planetoids, in grams per cubic centimeter, with respect to their average distances from the Sun in astronomical units (AU). A line of best fit is also shown. An astronomer discovers a new planetoid that is very close to the Sun, at an average distance of 0.1 AU. According to the line of best fit, which of the following best approximates the density of this planetoid, in grams per cubic centimeter?
5.5
5.7
5.9
6.1