A pharmaceutical company wants to test the effectiveness of a new allergy drug. The company identifies 250 females 30-35 years old who suffer from severe allergies. The subjects are randomly assigned into two groups. One group is given the new allergy drug and the other is given a placebo that looks exactly like the new allergy drug. After six months, the subjects' symptoms are studied and compared. Answer parts (a) through (c) below.(a) Identify the experimental units and treatments used in this experiment. Choose the correct answer below.A. The experimental unit is the new allergy drug. The treatments are the severe allergies the patients suffer from.B. The experimental units are the 30- to 35-year-old females being given the treatment. The treatment is the new allergy drug.C. The experimental units are the 30- to 35-year-old females being given the treatment. The treatment is six months.D. The experimental units are the symptoms from the drug. The treatment is the new allergy drug.