Consider the following activities in a building construction:1. Concreting of roofslabs 2. Brick-jelly lime concrete terracing 3. Erection of form work forslab 4. Construction of parapet wall in terrace

• A. 1, 3, 2, 4
• B. 3, 1, 4, 2
• C. 3, 1, 2, 4
• D. 1, 3, 4, 2