Because the antibiotic would not help stop the virus she would need something else.
A. Osmosis is the answer for this question
Codominance means that neither allele can mask the expression of the other allele. An example in humans would be the ABO blood group, where alleles A and alleles B are both expressed. So if an individual inherits allele A from their mother and allele B from their father, they have blood type AB.