Which of the following statements is true about the plight of Palestinian refugees living in camps in neighboring Arab countries?

Select the best answer from the choices provided.
A. In Lebanon, they are forbidden from owning property, using the healthcare system, or from working.
B. The Arab League prohibits Arab states from granting them citizenship in order to "avoid dissolution of their identity and protect their right to return to their homeland."
C. Some of the host countries are afraid that the Palestinian refugees will influence local economies and politics, so they place restrictions on them.
D. All answers are correct.