Hi, I have a text to be aligned inside a plot at a desired location (top right). I used the Show command followed by Graphics and Text. But I'm unable to take my text to the location.

in my code the text is "(b)" which is to be brought to the top right location.

My code:

y = Range[1, 10];
x = Range[1, 10];
visco = 12*10^-6;
x = -p22*(1/xi - I k);
y = (-q11*(1/xi - I k) - 
     x*(q22*(1/xi + I k) - q33*(1/xi + I k)*(I k - 1/xi) - 
        q44*(1/xi^2 + k^2) - q55*(1/xi - I k)))/(p22 + 
     p33*(I k - 1/xi) - p55*(1/xi^2 + k^2));
y = y*10^-21;
Show[Plot[{Im[y] /. {xi -> 100}, Re[x] /. xi -> 50, 
   Re[x] /. xi -> 10}, {k, 0, 100}, PlotRange -> All, 
  PlotStyle -> {Directive[Red, Thick], Directive[Blue, Dashed, Thick],
     Directive[Black, Thick, Dashed]}, Frame -> True, 
  FrameStyle -> Directive[Black, Thickness@0.0125], 
  PlotLegends -> 
   Placed[LineLegend[{Style["\[Xi] = 100", Bold, 14], 
      Style["\[Xi] = 50", Bold, 14], Style["\[Xi] = 10", Bold, 14]}, 
     LegendFunction -> None, LegendLayout -> "Column"], {Left, Top}], 
  FrameLabel -> {"K", 
    "\!\(\*SubscriptBox[\(\[CapitalOmega]\), \(i\)]\)"}, 
  LabelStyle -> Directive[Black, Bold, 14], RotateLabel -> True, 
  AspectRatio -> 0.5, 
  FrameTicks -> {{Charting`ScaledTicks[{10^9 # &, #/10^9 &}], 
     None}, {Automatic, None}}], 
 Graphics[Text[Style["(b)", FontSize -> 14, Black], {97, 97}]]]

Kindly advice.

Rgds.