In an aggregate expenditures diagram the imposition of a lump-sum tax (T) will: Multiple Choice not affect the C + Iq + Xn line O shift the C + Iq + Xn line downward by an amount equal to T x MPC. shift the C + Ig + Xn line downward by an amount equal to T O shift the C + lg + Xn line upward by an amount equal to T