Read the following context and choose the best option to answer the question.
Context: The transplanting process was a bit more work than I thought that it would be . I knew that I was going to need to cut the put off of him to get him loose but I had no idea to what extent he was going to be caught in the pot . The foot system had grown a good three to four inches past the bottom of the pot so the pot was pretty well integrated into the plant itself .
Question: What may be the reason for transplanting the plant ?
Options: 
A. The pot it 's in now is too big .
B. None of the above choices .
C. The directions state that it 's time .
D. It has outgrown the pot it 's in .


D