$($Section $9\mathrm{.}5)$ Which statement best describes the roles of single$-$ and double$-$opponent cells? Double$-$opponent cells respond to large areas of color and single$-$opponent cells resond to color patterns and borders. Single$-$opponent cells respond to large areas of color and double$-$opponent cells respond to color patterns and borders. Both single$-$ and double$-$opponent cells primarily respond to large areas of color. Both single$-$ and double$-$opponent cells primarily respond to reflective borders, but double$-$opponent also respond to shadow borders.