Consider the following statements: When two straight lines intersect: (i)adjacent angles are complementary (ii)adjacent angles are supplementary (iii)opposite angles are equal (iv)opposite angles are supplementary Of those statements (a) (i) and (iii) are correct  (b)  (ii) and (iii) are correct (c) (i) and (iv) are correct  (d)  (ii) and (iv) are correct