Triangle ABC has sides \(a, b, \text{ and } c\). For this triangle, four statements are made:
(i) If \(b^2 = a^2 - c^2\), then \(\angle \text{B} = 90^{\circ}\)
(ii) If \(c^2 = a^2 + b^2\), then \(\angle \text{C} = 90^{\circ}\)
(iii) If \(a^2 = b^2 - c^2\), then \(\angle \text{B} = 90^{\circ}\)
(iv) If \(b^2 = a^2 + c^2\), then \(\angle \text{A} = 90^{\circ}\)
From the statements above, the correct statements are ...
(A) i and iii
(B) ii and iv
(C) ii and iii
(D) i and iv