Given a text T, and several options, according to the question posed in the text T to choose the most appropriate option from the options as the answer, please directly output the most appropriate option, do not need to output the explanation.

A national government responds to a severe recession by funding numerous infrastructure projects using deficit spending. Which school of economic thought is most consistent with such action.
Option A:Keynesian
Option B:Monetarist
Option C:Neoclassical

Answer: A