Which of the following materials are categories of ceramic materials?
1. Oxides-alumina, Zirconia
2. Non-oxides-Carbides, Borides, Nitrides and Silicides
3. Composites- Particulate reinforced combinations of oxides and non-oxides
Select the correct answer using the options given below:

A. 1 and 2 only

B. 1 and 3 only

C. 2 and 3 only

D. 1, 2 and 3

Answer: Option D