Consider the advertisement for gutter cleaning service shown to the right, (a) What is the external reference price in this ad? (b) According to the course material, an advertisement could attempt to frame a price as a single loss, as two losses, as a gain and a loss, or as a gain foregone. Which one of those framings is this advertisement attempting to accomplish? Explain your reasoning. (c) If your internal reference price for gutter cleaning service was $125, how would you perceive this advertised price of the company's gutter cleaning service? Would you perceive it as a single loss, as two losses, as a gain and a loss, or as a gain foregone? Explain your reasoning.