Given below are two statements.
Statement - I: Penicillin’s full potential as an effective antibiotic was recognized and utilized extensively to treat wounded American soldiers during World War II.
Statement - II: After its initial discovery by Alexander Fleming, the significant development and medical application of Penicillin were driven by Ernest Chain and Howard Florey, who demonstrated its efficacy in fighting bacterial infections.
In light of the above statements, choose the correct answer from the options given below.