Which one of the following statements with reference to the Nebular Hy

Which one of the following statements with reference to the Nebular Hypothesis for the origin of Solar System is correct ?

The initiation of the nebular hypothesis can be considered as a diffuse, roughly spherical, slowly rotating expanding nebula
As a result of rotation and expansion, a disk is formed with matter concentrated in the centre
Expansion continues with the formation of the proto-Sun and the rings of material are left behind
The material in the rings get condensed and form the planets that revolve in orbits around the Sun
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UPSC CAPF – 2024
Statement D correctly describes a part of the process according to the Nebular Hypothesis.
The Nebular Hypothesis postulates that the Solar System formed from a contracting cloud of gas and dust (a nebula). As the nebula contracted under gravity, it rotated faster and flattened into a disk. The central part formed the proto-Sun, and the material in the disk accreted and condensed into planetesimals, which further combined to form the planets orbiting the Sun.
Statements A, B, and C incorrectly describe the initial state or the process as involving expansion rather than contraction. The formation of a disk and the subsequent condensation and accretion of material into planets within that disk are key stages of the hypothesis.