Final answer:
The question lacks a specific polynomial function description, thus the truthfulness of the statements A) It is a cubic function and C) It is an odd-degree function could be inferred only if more context is given, while options B) and D) inherently contradict being a cubic polynomial.
Step-by-step explanation:
The true statements about the polynomial function described here can be deduced to some extent based on the given information. However, there appears to be a misalignment between the question and the provided references, as no specific polynomial function is detailed.
Typically, a cubic function refers to a polynomial of the third degree, which would align with option A) It is a cubic function and would also suggest that option C) It is an odd-degree function could be true. Option B) It has four real roots cannot pertain to a cubic function because a cubic function has at most three real roots.
Moreover, quadratic functions, described as second-degree polynomials, contradict being cubic or having four real roots, which disqualifies option D) It is a quadratic function as pertaining to a cubic polynomial.