The correct answer is B) its graph is symmetrical about the y-axis.
A quadratic graph cannot be "folded" across the x-axis. The domain, or set of inputs, is all real numbers; there is no value of x for which there will be no y. The range, or set of outputs, is not all real numbers; there are values of y that will not be used in the graph.
If we rely solely on mathematics then the answer must be A. The other options seem to be from economy so it has nothing with mathematics. Please make sure that this is math task then answer.
