Read the sentences below and the functions of the word "as" in bold:

I.You can't be seen as a hero all the time. = to refer to the role or purpose of a person or thing.
II.As she finished her lunch break, the new clients arrived. = to talk about something that happens when something else takes place.
III.You shouldn't move in here, as this neighborhood is very far from the city center. = give a reason for a particular situation.
IV.You had the same idea as I did for this project. = to indicate simultaneous changes.
V.He is as nice as his younger brother. = to introduce an explanation.

Which alternatives are correct?