【单选题】
Given:<br /> <img src="https://nimg.ppkao.com/2018-08/longzhengxuan/2018080210432581623.jpg?sign=8ad410f2613c99bb62debbac3b78149d&t=62d2ce71" /><br /> Which statement is true?（）
A、The code will compile without changes.
B、The code will compile if public Tree() { Plant(); } is added to the Tree class.
C、The code will compile if public Plant() { Tree(); } is added to the Plant class.
D、The code will compile if public Plant() { this("fern"); } is added to the Plant class.
E、The code will compile if public Plant() { Plant("fern"); } is added to the Plant class.
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