Which of the Following Best Described the Model

Multiple Choice

Which of the following best described the model ?

A) Third-order polynomial model.
B) Second-order polynomial model.
C) First-order polynomial model since there is only one independent variable x.
D) Quadratic model since the termwill often be dropped out the model based on sample information.
E) Second-order polynomial model and first-order polynomial model since there is only one independent variable x.