How would one solve this? 1.) A pharmaceutical company is testing the effectiveness of a new drug for asthma patients. The drug is given to 90 volunteers who suffer from asthma, while a placebo is given to 90 other volunteers who also suffer from asthma. After 3 weeks, the volunteers are asked if they noticed improvement in their asthma symptoms. The results of the survey are shown in the contingency table below. What is the probability that a volunteer reported noticeable improvement in symptoms given that he received the test drug?

Select one:
a. 0.7111
b. 0.2524
c. 0.8312
d. 0.2889