Which of the Following Equations Is Not a Conditional Equation $- 9 ( x - 7 ) = - 16 x + 49$

Multiple Choice

Which of the following equations is not a conditional equation?

A) $- 9 ( x - 7 ) = - 16 x + 49$
B) $- 9 ( x - 7 ) = - 9 x - 7$
C) $x ^ { 2 } - 16 x + 63 = ( x - 9 ) ( x - 7 ) + 3$
D) $x ^ { 2 } - 18 x + 81 = ( x - 9 ) ^ { 2 } + 4 x$
E) $x ^ { 2 } - 9 ( - 7 x + 9 ) = x ^ { 2 } + 63 x - 81$