which of the following statements is true about bacteria?

Question

$\begin{array}{1 1} (a)\; \text{All types of bacteria gives food poisoning} \\ (b)\; \text{Freezing makes food last longer by killing bacteria} \\ (c)\; \text{Bacteria grows fast when they are warm} \\ (d)\; \text{All bacteria needs air to survive} \end{array}$