Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Abstract description | Concrete example |
| --- | --- |
| different plants have different life spans | apple trees can live for many years but bean plants usually live for only a few months |
| plants depend on other plants | shade-loving plants such as leafy greens and squash depend on taller vegetables such as corn to provide shade |
| plants produce many offspring | one pigweed plant can produce half a million seeds |
| seasonal changes help plants grow | day length changes initiate growth and flowering and also let the plant know when to start to prepare for winter dormancy |
Question:
Which of the following is a concrete example of different plants having different life spans? Select the correct choice to answer the question or fill in the blank.
Choices:
(A) shade-loving plants such as leafy greens and squash depend on taller vegetables such as corn to provide shade
(B) day length changes initiate growth and flowering and also let the plant know when to start to prepare for winter dormancy
(C) one pigweed plant can produce half a million seeds
(D) apple trees can live for many years but bean plants usually live for only a few months
Answer:
(D) apple trees can live for many years but bean plants usually live for only a few months