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Suppose the government starts with a debt of $19. Then in year 1, there is a deficit of $95 billion, in year 2 there is a deficit of $53 billion, in year 3 there is a surplus of $33 billion, and in year 4 there is a deficit of $25 billion. What is government debt at the end of year 4? O a. $225 billion 0 b. $25 billion 0 c. $140 billion 0 d. $159 billion 0 e. $192 billion