[尊敬語「そんけいご」] => Respectful form of A N4
Honorifics
[要「よう」]するに => A. In short/put simply, B N2
Adjectival, Descriptions
[必要「ひつよう」]はない => It is not necessary for A to be done N2
Needs, Requirements
[謙譲語「けんじょうご」] => Humble form of A, humble form of する verbs N4
Honorifics