It cannot be inferred that the new additive caused the extended life of the cut flowers, and this inference cannot be applied to the carnations from the greenhouse.
B
It can be inferred that the new additive caused the extended life of the cut flowers, and this inference can be applied to all carnations.
C
It cannot be inferred that the new additive caused the extended life of the cut flowers, and this inference can only be applied to the carnations from the greenhouse.
D
It can be inferred that the new additive caused the extended life of the cut flowers, and this inference can only be applied to the carnations from the greenhouse.