Which assumptions are implied from the below statement?

Statement: Ozone layer depletion is caused by excessive Chlorofluorocarbons which are majorly emitted by refrigerants and air conditioners.

Assumptions:

I: Reducing the use of refrigerants and air conditioners will protect the ozone layer.

II: The ozone layer is beyond saving now.

1
Only I is implicit.
2
Only II is implicit.
3
Both I and II are implicit.
4
Neither I nor II is implicit.

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