Add the Proper Constant to the Binomial So That the Resulting

Multiple Choice

Add the proper constant to the binomial so that the resulting trinomial is a perfect square trinomial. Then factor the
trinomial.
- $$x ^ { 2 } + 14 x$$

A) $x ^ { 2 } + 14 x + 14 = ( x + 196 ) ^ { 2 }$
B) $x ^ { 2 } + 14 x + 196 = ( x + 14 ) ^ { 2 }$
C) $x ^ { 2 } + 14 x + 49 = ( x + 7 ) ^ { 2 }$
D) $x ^ { 2 } + 14 x + 7 = ( x + 49 ) ^ { 2 }$