For hydrated Portland cement, the coefficient of thermal expansion lies between approximately ____________

• A. 5.4 * 10-6 and 12.6 * 10-6 per oC
• B. 10.8 * 10-6 and 16.2 * 10-6 per oC
• C. 5.4 * 10-6 and 10.8 * 10-6 per oC
• D. 10.8 * 10-6 and 12.6 * 10-6 per oC