Answer the Question $\mathrm { n }$ Is an Even Number, Then Which of the Following Statements

Multiple Choice

Answer the question.
-If $\mathrm { n }$ is an even number, then which of the following statements is true?

A) The equation $\mathrm { x } ^ { \mathrm { n } } + 1 = 0$ has exactly one real root.
B) The equation $\mathrm { x } ^ { \mathrm { n } } + 1 = 0$ has $\mathrm { n } + 1$ roots.
C) The equation $\mathrm { x } ^ { \mathrm { n } } + 1 = 0$ has $\mathrm { n }$ nonreal roots.
D) The equation $x _ { n } + 1 = 0$ has at least one real root.