Part A: Answer any 2 out of 3 Questions. Question 1: (25 marks) a) What is a simultaneous equation model? (5 marks) b) What is the main problem of a simultaneous equation model? (5 marks) e) Discuss the structural form and the reduced form of a model? (5 marks) d) Which techniques can be used to solve for the structural-form when only the reduced-form model is available? What are the conditions? (5 marks) c) Name and discuss the test used to test for Exogencity (5 marks) (25 marks)