If \(\frac{1}{(a + b)^{-\frac{1}{2}}} = (a + b)^{-\frac{1}{2}}\), which of the following must be true?
(A)\(a = 0\) (B)\(\sqrt{a + b} = -1\) (C)\(\sqrt{a + b} = 0\) (D)\(a + b = 1\) (E)\((a + b)^2 = 0\)
D