Andy has a collection of movie dvds.in andy's collection,
[tex]\frac{3}{5} \\[/tex] of the dvds are "action", and
[tex]\frac{1}{4}[/tex] of the dvds are comedy."]

andy said that [tex]\frac{4}{9}[/tex] of his collection is "action" or "comedy." cynthia said that andy made an error. explain whether andy is correct or incorrect