Refer to the Following

refer to the following:
A manager wishes to estimate an average cost equation of the following form:

where Q is the level of output. Letting Z = Q² and using least-squares estimation, the manager obtains the following computer output:

-Which of the parameter estimates are statistically significant at the 1% significance level?

A) All the parameter estimates are statistically significant.
B) All parameter estimates except are statistically significant.
C) is not statistically significant, but all the rest of the parameter estimates are significant.
D) is not statistically significant, but all the rest of the parameter estimates are significant.