What is the correct order of processes in the accretion of planetesimals?

Masses of matter form around dust grain, masses of matter collide, and atoms and molecules are added to dust grain.

Masses of matter collide, masses of matter form around dust grain, and atoms and molecules are added to dust grain.

Atoms and molecules are added to dust grain, masses of matter form around dust grain, and masses of matter collide.

Masses of matter collide, atoms and molecules are added to dust grain, and masses of matter form around dust grain.

Atoms and molecules are added to dust grain, masses of matter form around dust grain, and masses of matter collide.

Explanation:

Accretion of planetesimals is a fast and appropriate process in which small particles coagulate to form larger matter, which finally coalesce to produce planets. This process occurs in stages, with one stage leading to another.

The process involve the combination of small particles (e. g atoms or molecules) to form grains or pebbles of dust. These dust grains or pebbles now begin to stick to one another to form a massive matter called planetesimals.

The atoms or molecules are added to dust, masses of matter form around dust grain, and masses of matter collide and forms planetesimals.