In Which One of the Following Situations Is the "Multiplier

Multiple Choice

In which one of the following situations is the "multiplier" for a given autonomous change in investment spending the largest?

A) MPS = 0.4, MPM = 0.2, t = 0.25
B) MPS = 0.4, t = 0.25 and the economy has no foreign trade.
C) MPS = 0.25, MPM = 0.1, t = 0.2
D) MPS = 0.25, MPM = 0.1, t = 0.2, and the economy has "foreign "repercussions."