Multiple Choice: The graph $\operatorname{cos}(x)$ differs from its $6$^th degree Maclaurin polynomial $p _ { 6 } ( x ) = 1 - x ^ { 2 } + \frac { x ^ { 4 } } { 2 ! } - \frac { x ^ { 6 } } { 3 ! }$ at $x = 0.5$ by: