Which classification best represents a triangle with side lengths $6\text{ cm}$, $10\text{ cm}$, and $12\text{ cm}$?

Aacute, because $6 + 10 > 12$

Bacute, because $6^2 + 10^2 < 12^2$

Cobtuse, because $6^2 + 10^2 < 12^2$

Dobtuse, because $6 + 10 > 12$