Statement: Ensure a good night sleep for your family with safe and effective XYZ mosquito coil. - written on an advertisement.
- XYZ mosquito coil is better than any other mosquito coil.
- A good night sleep is desirable.
Only I is implicit.
Only II is implicit.
Either I or II is implicit.
Neither I nor II is implicit.
The second assumption only follows. There is nothing in the advertisement slogan that says that XYZ is best.