Which row accurately pairs three radioactive sources with their uses?
- Aemits alpha-particles and has a long half-life: monitoring the thickness of aluminium foil; emits beta-particles and has a long half-life: smoke alarm; emits gamma radiation and has a short half-life: tracer to be injected to detect cancer
- Bemits alpha-particles and has a long half-life: monitoring the thickness of aluminium foil; emits beta-particles and has a long half-life: tracer to be injected to detect cancer; emits gamma radiation and has a short half-life: smoke alarm
- Cemits alpha-particles and has a long half-life: smoke alarm; emits beta-particles and has a long half-life: monitoring the thickness of aluminium foil; emits gamma radiation and has a short half-life: tracer to be injected to detect cancer
- Demits alpha-particles and has a long half-life: smoke alarm; emits beta-particles and has a long half-life: tracer to be injected to detect cancer; emits gamma radiation and has a short half-life: monitoring the thickness of aluminium foil