[单选题]Given: 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.