We were exiled by force of arms. We were exiled on foot. We were exiled to take the earth as our bed. And the sky as a cover. And to be fed from the crumbs of those among the governments and international organizations who imparted their charity. We were exiled but we left our souls, our hopes and our childhood in Palestine. We left our joys and sorrows. We left them in every corner, and on every grain of sand in Palestine. We left them with each lemon fruit, with each olive. We left them in the roses and flowers. We left them in the flowering tree that stands with pride at the entrance of our house in al-Ramla. We left them in the remains of our fathers and ancestors. We left them as witnesses and history. We left them, hoping to return. –The Lemon Tree,
Sandy Tolan

What is the main idea of this passage?

A: The British mandate in Palestine displaced Palestinians
B: The Holocaust led to the exile of Palestinians.
C: The Arab-Israeli War led to the exile of Palestinians.
D: The establishment of Israel unfairly displaced Palestinians.