A detector is being used to record the radiation emitted by a radioactive source across several days. The table gives the count rate from the source at various times. What is the half-life of the source?
- Abetween 1 and 2 days
- Bbetween 2 and 3 days
- Cbetween 3 and 4 days
- Dbetween 4 and 5 days