3. Using an appropriate supply diagram, explain the impact on the supply of educational computer games in the following cases: a) The government provides subsidies for the purchase of educational computer games. (5 marks) b) There is an increase in the rate of commission paid to creators and the fee paid to distributors of educational computer games. (5 marks) c) The government introduces a 15 per cent sales tax on all computer games. (5 marks) d) There are technological advances in the production of educational computer games