阅读下列短文，根据短文内容从每题所给的A、B、C、D四个选项中选出最佳答案。
Kim and Ray were close friends. One day, they went on a sea voyage (航行). At first, everything was fine. However, their ship was broken in the middle of the ocean. Kim and Ray left the ship and swam to a nearby island.
Kim and Ray didn't find anything to eat on the island. They had to pray（祈祷; 祷告） that they could survive (存活). They wanted to know whose prayer would be more powerful. Kim moved to the eastern part of the island and prayed there. Ray went to the western part of the island and prayed there.
Kim prayed and his prayer came true. He got some meat, fruit and vegetables on the seashore. Several days later, Kim prayed that he could have a ship to take him home. His prayer came true again. There came a ship to take him home.
As Kim was about to enter the ship, he heard someone speak to him. It was just a voice, "Are you going alone, leaving your friend here?"
Then Kim remembered about Ray. He asked the voice, "May I know who you are?"The voice answered, "I am the one that answers everyone's prayers. In fact, I was not answering your prayers. I was only answering Ray's prayers. He said 'please make all of Kin's prayers come true. '"
Kim was in tears and rushed to the other side of the island. When he found Ray there, Ray was dying because he didn't have anything to eat. Kim said sorry to Ray, gave him some food and saved his life in time. He realized that Ray's prayer was more powerful. It was because Ray's prayer was totally selfless.
