Stationery classification: “Pen : Rubber (Eraser) : Pencil” — choose the option that best groups the trio.

Introduction / Context:
These three items belong to common school/office supplies. “Rubber” in Indian English often means eraser. The item asks for the shared category.

Given Data / Assumptions:

• Pen: writing tool.
• Rubber (eraser): correction tool.
• Pencil: writing/drawing tool.

Concept / Approach:
Select “stationery goods” as the precise classification for these desk/school items.

Why Other Options Are Wrong:
Generic goods/famous sites/sports terms/musical notes are off-category.

Final Answer:
They are stationery goods