Name the components of parodontium.

• A. Gum, gingival papillae, dental alveolus
• B. Neck of the tooth, periodontal ligament, gum
• C. Periodontium, gum, bone alveolus, cementum
• D. Periodontium, cementum, alveolar periosteum
• E. Pulp, root, periodontium