Identify a product you have purchased that would be sold in a perfectly competitive market. Why is this a perfect competitive product (be sure to address all relevant assumptions)? Identify a product you have purchased that is from a monopoly. Why is this a monopolistic product (be sure to address all relevant assumptions).Identify a product you have purchased that is from a monopolistic competitive firm. Why is this a monopolistic competitive product (be sure to address all relevant assumptions). Identify a product you have purchased that is from a oligopoly. Why is this an oligopolistic product (be sure to address all relevant assumptions).For each of these products, how does the firm determine the profit-maximizing output. (HINT: at what point is profit maximizing output determined?). in a iphone