A statement is followed by three courses of action numbered I, II and III. Assuming everything in the statement to be true, decide which of the suggested courses of action (a decision to be taken for follow up / improvement in regard to the problem) logically follow for pursuing.

Statement:

A major drain in the city is getting dirty and polluted as the residents are dumping garbage into the drain over so many years.

Courses of Action:

I. The municipal authorities should employ security personnel to guard the drain so that people cannot dump any more garbage.

II. The authorities should clear the drain and make alternative arrangements for people to dump their garbage.

III. All those who are dumping garbage into the drain should be penalized.