What Is the Difference Between Secondary Dentin and Tertiary Dentin

What is the difference between secondary dentin and tertiary dentin?

A) Secondary dentin forms before the tooth erupts and continues forming during the life of the tooth while tertiary dentin forms after eruption, making up the bulk of the tooth.
B) Secondary dentin forms after the tooth is erupted as a response to trauma, while tertiary dentin appears within the wall of the pulp chambers.
C) Secondary dentin forms after the tooth erupts, forming the bulk of the tooth, while tertiary dentin forms as a response to trauma.
D) Secondary dentin forms on the apical half of the root, while tertiary dentin forms within the wall of the pulp chambers.