Answer: Option B
Step-by-step explanation:
The bacterial infections are caused by invading of harmful bacteria inside the body of the host cell. They invade inside the body and starts replicating inside it.
The rate of replication of bacteria in the host is very rapid. This makes the infection grow and spread so rapidly.
Bacterial infection can be cured by taking antibiotics that is used to kill these bacteria.
Hence, the correct answer is option B