$(20$ points$)$ Use the Gordon Growth Model or Perpetuity Model as appropriate to find the value of each firm as follows and explain which model you used $($show all work$),$ or$,$ if you cannot use either model to value a company, clearly explain why you can't.

$\backslash$table$[[$Firm$,$Dividend this year $($D$1),$Dividend growth rate,Required Return$],[$A$,$$$1\mathrm{.}00,10\%,12\%$