3) Skylar and Skyler are roommates with identical incomes (and similar names). They have $150 to spend on cellphone data (X) and economics books (Y). Their current cellphone provider, Spotty Mobile, charges 5 cents per MB of data and the bookstore charges $5 per book. a. Carefully draw and label this budget constraint on graph. b. Skylar and Skyler are considering a switch to Verizon. Verizon offers current Spotty customers a quantity discount if they switch. Verizon will charge 5 cents per MB for the first 1500MB and 3cents for data usage above 1500MB. On a well labelled graph show this new budget constraint. c. If they switch to Verizon, Skylar will be better off but Skyler is indifferent between Spotty and Verizon. Use a well labeled graph (or graphs) to explain why this might occur.