Which of the following is best arranged in order of softness?

The order of softness of pencil lead can be arranged as follows: - H (Hard) - HB (Hard Black) - 2B (Soft Black) - 3B (Very Soft Black) The softness of pencil lead is determined by the graphite-to-clay ratio in the lead. The more graphite in the lead, the softer it is and the darker the mark it will make on the paper. "H" pencils have the least amount of graphite and make light, fine lines. "HB" pencils are slightly softer and make darker lines. "2B" pencils have even more graphite and make even darker lines. "3B" pencils have the most graphite and make the darkest lines.