Which of the Following Equations Would Be Obtained When Solving $4 x ^ { 2 } + 8 x + 8 = 0$

Which of the following equations would be obtained when solving $4 x ^ { 2 } + 8 x + 8 = 0$ by completing the square?

A) $\left( x ^ { 2 } + 1 \right) ^ { 2 } = - 1$
B) $( x + 1 ) ^ { 2 } = 3$
C) $( x + 1 ) ^ { 2 } = - 3$
D) $( x + 1 ) ^ { 2 } = - 1$