Statement: The UN report, the latest in a series of four yearly reports reviewing the ozone layer since the Montreal Protocol (1987), has revealed that the hole in the ozone layer over Antartica is shrinking. Statement: I.We are now a point where the atmosphere can actually remove CFCs faster than they are being released into the atmosphere. II. The level of destructive ozone-depleting CFCs in the atmosphere is declining.

• if only conclusion I follows
• if only conclusion II follows
• if either I or II follows
• if neither I nor II follows, and