Research Indicates That Albuterol, a Drug Used to Relax Bronchial

Research indicates that Albuterol, a drug used to relax bronchial muscles, improving airflow and thus offering relief from asthma, consists only of one enantiomer, the R-form. Why is it important for this drug to consist of only one enantiomeric form, rather than a mixture of enantiomers?

A) Different enantiomers may have different or opposite physiological effects.
B) It is impossible to synthesize mixtures of enantiomers.
C) It is much less expensive to synthesize one enantiomer at a time.
D) Albuterol is an example of a compound for which only one enantiomer exists.
E) Only the R-form of Albuterol has been studied; until more information is available, physicians prefer to use the pure R-form.