2. What is the best description for the curved line in the figure? Please note that a₀ is the Bohr radius. (A) the radial distribution function of 2s of a hydrogen atom. (B) the radial distribution function of 3s of a hydrogen atom. (C) the radial distribution function of 3p of a hydrogen atom. (D) the radial wavefunction of 2s of a hydrogen atom. (E) the radial wavefunction of 3p of a hydrogen atom.