A statement is followed by two courses of action numbered I and II. Assuming everything in the statement is true, decide which of the suggested actions (decisions to be taken to follow up/improve the problem) logically follow.

Statement:

Residents of this region are frequently faced with incidents of sudden power surges and voltage surges which cause damage to sensitive electronic equipment installed in their homes.

Courses of action:

I. Residents should collectively write a letter to the electricity supply office to investigate and rectify the issue.

II. In case of such power surges witnessed by them, they should unplug these devices to avoid any possible damage to these sensitive electronics devices.