Which of the following statements are wholly correct regarding broken-brick aggregate useable in concretes?1. Broken-brick aggregate is obtained by crushing waste bricks, and it has a density varying between 1000 kg/m3 — 1200 kg/m3.2. Such aggregate is used in concrete for the foundation in light buildings, floorings, and walkways.3. Such aggregate may also be used in light-weight reinforced concrete floors.

• A. 1 and 2 only
• B. 2 and 3 only
• C. 1 and 3 only
• D. 1, 2 and 3