Which one of the following is not contained in Portland cement?

• A. \[C{{a}_{3}}A{{l}_{2}}{{O}_{6}}\]
• B. \[C{{a}_{3}}Si{{O}_{5}}\]
• C. \[C{{a}_{2}}Si{{O}_{4}}\]
• D. \[C{{a}_{3}}{{(P{{O}_{4}})}_{2}}\]