Question 4120 marks! A. The toothpaste market is a monopolistic competitive market. Shining White Toothpaste Co. (Shining White) is one of the rms in the toothpaste market. The diagram of Shining White is shown below. Shining White is currently producing at the output level of Q1. PointA is where the demand curve is tangent to the ATC, i.e. AT C is equal to P3 at point A. Price Cost Revenue .; A31. II' ('1. I I I I I I E :n