One night during World War II, Prime Minister Churchill arrived for a conference with President Roosevelt, and they talked till very late. Then, as was the custom, the guest was shown to a bedroom on the second floor, where the Roosevelt family slept.a.After the talks had been finished, Churchill went to a bedroom on the second floor.b. The Roosevelt family slept after Churchill arrived.c. The guest was supposed to sleep on the same floor as the host.d. Only during World War II did Churchill arrive for a conference with President Roosevelt