What is the correct answer and why?

Exercise 14 Assume that C = (:0 | (:1(Y T). Suppose that taxes (T) increase and money supply (Ms) increases in such a way that output is constant in equilibrium (assume c1-=::21). These policy changes will produce a) An increase in investment (I) and a decrease in private consumption. 1)) An increase in investment (I) and a decrease in government expenditures (G)- c) An increase in investment (I) and an increase in private saving. d) A decrease in investment (I) and an increase in public saving