What is the medical treatment option for abnormal uterine bleeding using NSAIDs?

I- The most used is mefenamic acid (Ponstil Forte®).
II- It is indicated 500mg/8hs until bleeding ceases.
III- However, only a reduction in bleeding is observed in 20-50% of cases.
IV- It should be indicated in patients with hypermenorrhea and regular menstrual rhythm.
a) Only statements I and II are correct.
b) Only statements III and IV are correct.
c) All statements are correct.
d) None of the statements are correct.