What is the difference between a bactericidal substance and a bacteriostatic substance?

A) Bactericides kill microorganisms and bacteriostatics foster their growth and/or reproduction
B) Bactericides kill microorganisms and bacteriostatics inhibit their growth and/or reproduction.
C) Bacteriostatics kill microorganisms and bactericides inhibit their growth and/or reproduction
D) Bacteriostatics kill microorganisms and bactericides foster their growth and/or reproduction

B