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Part 1 (10 marks) Suppose that you would like to know how well Urbanization Rate (URB) explains Gross Domestic Product (GDP) for Saudi Arabia. Q1. The fitted regression is: A) GDR = a + 8 x URB, + B) GDR = 8 + 8 x URB, C) URB, = a + 8 x GDR D) URB, = a + 8 x GDP + The results of the estimation of the model by OLS method is as follows: Dependent Variable: GDP Method: Least Squares Date: 06/15/25 Time: 21:47 Sample: 1975 2023 Included observations: 49 Variable Coefficient Std. Error t-Statistic Prob. 15.25297 8.349545 0.0000 5 5 URB 2.636961 4 202 7 219 0.0000