A manufacturer of flea collars for animals that weigh less than 5 kilograms injects the collars with 15 milligrams of a biocide that only acts on fleas. The manufacturer will release a collar that has no less than 12 milligrams and no more than 16 milligrams of insecticide. The following list shows the result of sampling 36 collars from an actual production run of 720. What percentage flea collars would be acceptable to ship according to this sample?
A.32 out of 36 collars, or 89%
B.4 out of 36 collars, or 11%