Lucky Bubble is one of the 500 companies in producing bubble tea in Country Happy. The equilibrium price of a cup of bubble tea is $30 and Lucky Bubble has the following cost structure. TR MR Quantity Total Cost TFC TVC (Cups per month) ($) NA 0 12,500 12500 C 30 1,000 30,000 . 12500 17500 4500 0 1,500 36,000 . 1250 0 2350 0 2,000 43,000 12500 30500 15coo 3 2,500 53,000 125co 40500 90000 30 3,000 68,000 12590 5 55 ca(d) Recently, Lucky Bubble keeps operating in the bad time. After an investigation, the owner recognized that researches indicate nowadays both bubble tea and coffee are favourite beverages of young adults of Country Happy and recently the price of coffee reduced substantially. In the meanwhile, the management fee of the shop paid by Lucky Bubble adjusted upward. Illustrate this new situation of Lucky Bubble in the short run in the same diagram of part (c). Explain the situation of Lucky Bubble briefly. (7 marks)\f