Correct option is B
CGI stands for Corrugated Galvanized Iron, which refers to a type of roofing sheet made from galvanized iron.
These sheets are corrugated (wavy) to increase their stiffness and durability while reducing the weight.
Key Features of CGI Sheets:
Made by galvanizing (coating with zinc) iron to prevent rusting.
Widely used in roofing and cladding for industrial, agricultural, and residential purposes.
Corrugation enhances the sheet's strength while allowing lightweight construction.
