# A compound formed in an organism for inhibiting growth of another organism is

$\begin{array}{1 1}(A)\;\text{Antigen}\\(B)\;\text{Antibody}\\(C)\;\text{Antibiotic}\\(D)\;\text{Antiallergic }\end{array}$

A compound formed in an organism for inhibiting growth of another organism is antibody
Hence (B) is the correct answer.