You read that the frequency of a particular disease-associated recessive allele in a population is 12%. What does that mean?

A) 12% of the population has the disease caused by that allele.
B) 12% of the population is a carrier for that disease.
C) For every 100 people, there are 12 copies of the allele.
D) The allele is present in 12% of the cells in your body.