By saying that she had come full circle under the pine tree, the author meant that __________.(Unit 3)
选项：

A:she grew up with the love of her mother and then successfully raised up her sons with love
B:she knew she would never forget her mother and all the events happening there
C:she had told her mother about her marriage and then her son told her about his marriage
D:the pine tree grew up to be a big tree and some young pine trees were planted nearby