The given statements is followed by some courses of action. Assuming the statements to be true, decide the correct option.

Statement:

There has been a significant drop in the water level in the lakes supplying water to the city.

Courses of action:

(I) The water supply authority should impose a partial cut in supply to tackle the situation.

(II) The government should appeal to all the residents thought mass media for minimal use of water.

(III) The government should ban the water supply in lower area.