Emergency pills use high-dose Levonorgestrel 0.75 mg, which matches (IV).
Triphasic pills combine different doses of hormones like Levonorgestrel and ethinylestradiol to mimic natural cycles — matching (III).
Mini pills contain only progestin, like Levonorgestrel 75 µg — matching (I).
IVth generation pills often contain newer progestins like Drospirenone — matching (II).
Therefore, the correct match is (A)-(IV), (B)-(III), (C)-(I), (D)-(II).