The correct option is
B i-d, ii-c, iii-b, iv-a
(A)Chloromycetin is used to treat the bacterial eye infection. It is produced by Streptomyces Venezuealae.
(B)Erythromycin is an antibiotic that prevents infection. It is produced from Streptomyces Erythreus
(C)Penicillin is produced from Penicillium notatum.
(D)Streptomycin is used to reduce infection. It is produced by a Streptomyces griseus.
So, the correct option is 'i-d, ii-c, iii-b, iv-a'.