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:
| DVD title | Season | Aspect ratio | Episode count | Time length | Release date |
| --- | --- | --- | --- | --- | --- |
| Ben 10: Alien Force Volume 1 | Season One | 4:3 | 5.0 | 110 Minutes | October 21, 2008 |
| Ben 10: Alien Force Volume 2 | Season One | 4:3 | 4.0 | 88 Minutes | January 13, 2009 |
| Ben 10: Alien Force Volume 3 | Season One | 4:3 | 4.0 | 88 Minutes | April 7, 2009 |
| Ben 10: Alien Force Volume 4 | Season Two | 16:9 | 5.0 | 113 Minutes | September 1, 2009 |
| Ben 10: Alien Force Volume 5 | Season Two | 16:9 | 4.0 | 90 Minutes | November 17, 2009 |
| Ben 10: Alien Force Volume 6 | Season Two | 16:9 | 4.0 | 90 Minutes | March 30, 2010 |
| Ben 10: Alien Force Volume 7 | Season Three | 16:9 | 7.0 | 159 Minutes | June 29, 2010 |
| Ben 10: Alien Force Volume 8 | Season Three | 16:9 | 6.0 | 136 Minutes | August 24, 2010 |
| Ben 10: Alien Force Volume 9 | Season Three | 16:9 | 7.0 | 180 Minutes | October 5, 2010 |
Question:
What is the aspect ratio for the September 1, 2009 release?
Answer:
16:9