Which of the following is an antibiotic?

$A$ scientist associated with the discovery of the first 'antibiotic' is

Who coined the term 'antibiotic'?

Consider the following statements:
$I.$ Antibiotics are chemical substances produced by some microorganisms which can kill or retard the growth of other disease-causing microorganisms.
$II.$ Penicillin is the first antibiotic discovered by Alexander Fleming $(1928)$,while working on the bacterium $Staphylococcus$ $aureus$.
$III.$ The function of penicillin as an antibiotic was established by Ernst Chain and Howard Florey.
Which of the statements given above are correct?

$A$ chemical substance produced by a microorganism for inhibiting the growth of another is

Match Column-$I$ with Column-$II$ and select the correct option.

Column-$I$	Column-$II$
$(a)$ Brown rust of wheat	$(i)$ Virus
$(b)$ Tobacco mosaic	$(ii)$ Bacteria
$(c)$ Black rot of crucifers	$(iii)$ Fungi
$(d)$ Red rot of sugarcane