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:
| No. in series | Title | Directed by | Written by | Original air date | Production code | U.S. viewers (millions) |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | " Pilot " | Jace Alexander | Matt Nix | June28,2007 | BN100 | 4.0 |
| 2.0 | " Identity " | Rod Hardy | Matt Nix | July5,2007 | BN101 | 4.0 |
| 3.0 | "Fight or Flight" | Colin Bucksey | Craig O'Neill & Jason Tracey | July12,2007 | BN103 | N/A |
| 4.0 | "Old Friends" | David Solomon | Alfredo Barrios, Jr. | July19,2007 | BN102 | N/A |
| 5.0 | "Family Business" | Sandy Bookstaver | Matt Nix | July26,2007 | BN104 | N/A |
| 6.0 | "Unpaid Debts" | Paul Holahan | Nick Thiel | August2,2007 | BN105 | 4.41 |
| 7.0 | "Broken Rules" | Tim Matheson | Mere Smith | August9,2007 | BN106 | N/A |
| 8.0 | "Wanted Man" | Ken Girotti | Craig O'Neill & Jason Tracey | August16,2007 | BN107 | N/A |
| 9.0 | "Hard Bargain" | John Kretchmer | Alfredo Barrios, Jr. | August23,2007 | BN108 | 4.08 |
| 10.0 | "False Flag" | Paul Shapiro | Matt Nix & Ben Watkins | September13,2007 | BN109 | 4.0 |
| 11.0 | "Dead Drop" | Jeremiah Chechik | Craig O'Neill & Jason Tracey | September20,2007 | BN110 | 4.8 |
Question:
What is the production code of the episode directed by David Solomon? 
Answer:
BN102