Question 5} Describe using appropriate supplyr and demand diagrams, how the existence of data roaming charges affected both consumer and producer surplus in the mobile phone market. 5 marks 2 marks for drawing the correct graph 2 marks for explaining the movements and shifts in the graph in relation to consumer surplus {decrease} and producer surplus {increase due to gains from roaming charges) 1 mark exible {can be awarded at the discretion of the marker for instance for outstanding referencing, excellent interpretation