Penicillin is the first antibiotic. It was discovered by
Alexander Flemming $:\, 1928$
Alexander Flemming $:\, 1930$
S Waksman $:\, 1928$
S Waksman $: \,1930$
Which one of the following pairs is wrongly matched ?
Identify correct pair :
Read the following statement having two blanks ($A$ and $B$).
A drug used for ___$A$___ patients is obtained from a species of the organism ___$B$___ .
The one correct option for the two blanks is