An analyst is organising a data set for managing the numbers of employees of the various de- partments of the company. The following text describes the data: The top of the company has four directorates: Personal, Sales, Development, Creation. Personal has three departments: operations (8 employees), hiring (3 employees) and legal (4 employees). Sales has four departments: marketing (3 employees), networking (4 employees), sales repre- sentations(20 employees) and customer care (5 employees). Development has two departments: New Product (10 employees) & re-engineering and maintenance (25 employees). Creation also has two departments: Requisites Analysis (10 employees) and Design (12 employees). Represent that data: (a) as a table/spreadsheet (b) as a nodelink tree (c) as a treemap (d) as a ring tree (sunburst)