Final answer:
Halley's comet has a period of 75 years and is not periodic.
Step-by-step explanation:
Halley's Comet is a comet with a period of 75 years. It has been observed and recorded on every passage near the Sun since 239 BCE at intervals ranging from 74 to 79 years. The period of its return varies somewhat due to orbital changes.
Therefore, the relevant accurate information is that Halley's comet is 75 years and it is not periodic. Option 3) B, E is the correct option.