How to draw Mundell-Fleming Trilemma in Latex (using TikZ)?

Welcome new contributor! This is a starting point for you.

documentclass{article}
usepackage{mathpazo}
usepackage{tikz,lipsum}
begin{document}
lipsum[1]
begin{center}
begin{tikzpicture}[>=stealth,line width=2.5pt,
n/.style={text=white,fill=#1,midway},
nodes={font=bfseriessffamily}]
renewcommand{baselinestretch}{.8} 
defr{3} 
colorlet{colorA}{red}
colorlet{colorB}{teal}
colorlet{colorC}{green!50!black}

path[nodes={align=center}]
(0,0) node{Pick oneside ofthe triangle}
(90:r) node (C) {Free capitalmobility}       
(210:r) node (B) {Exchangeratemanagement}
(-30:r) node (A) {Monetaryautonomy}
;
draw[<->,colorC] (A)--(B) node[n=colorC,below=1mm]{C};
draw[<->,colorA] (B)--(C) node[n=colorA,above left=1mm]{A};
draw[<->,colorB] (C)--(A) node[n=colorB,above right=1mm]{B};
path (current bounding box.north west)+(0,5mm) node[right,scale=1.2] {The policy trilemma};
end{tikzpicture}   
end{center}
lipsum[2]
end{document}