All of the above are carbon link.
bis an example of intracelluar, not inter, so b is your correct answer
Agent that kills microorganisms, rather than inhibits it: bactericid
e
Microbial growth can be controlled and that control usually involves the use of physical or chemical agents. Chemical agents which either kill the microorganisms are called cidal agents while those that prevent their growth are referred to as static agents. of microorganisms. Thus, the term bactericidal refers to killing bacteria, and bacteriostatic refers to inhibiting the growth of bacterial cells.