Find Two Possible Missing Terms So That the Expression Is $\mathrm { x } ^ { 2 } + \ldots + \frac { 1 } { 4 }$

Multiple Choice

Find two possible missing terms so that the expression is a perfect square trinomial.
- $\mathrm { x } ^ { 2 } + \ldots + \frac { 1 } { 4 }$

A) $- \frac { 1 } { 2 } , \frac { 1 } { 2 }$
B) $- 2 x , 2 x$
C) $- x , x$
D) $- \frac { 1 } { 2 } x , \frac { 1 } { 2 } x$