Using the stress$-$strain figure below, answer the following $7.$ For the Cu$-$Ag phase diagram, answer the following questions. $(11$ points$)$

a$.$ For an alloy of composition $\backslash (85\backslash$mathrm$\{$wt$\}.\backslash \%\backslash$mathrm$\{$Ag$\}\backslash ),$ given by the dotted line, draw the microstructure at the labeled points, A$,$ B$,\backslash$& C$.$ Include the composition of each phase at these points. $(6$ points$)$ b$.$ At a temperature just below the eutectoid determine $1)$ what microconstituent phases are present in the microstructure and $2)$ the fraction of each of the microconstituents. $(5$ points$)$