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:
| Date | Location | Head coach | Opponent | Result |
| --- | --- | --- | --- | --- |
| 29 July 2008 | Shah Alam Stadium | B. Sathianathan | Chelsea | 0–2 (L) |
| 16 July 2011 | National Stadium, Bukit Jalil | K. Rajagopal | Liverpool | 3–6 (L) |
| 24 July 2012 | National Stadium, Bukit Jalil | K. Rajagopal | Arsenal | 0–2 (L) |
| 30 July 2012 | National Stadium, Bukit Jalil | K. Rajagopal | Manchester City | 0–3 (L) |
| 21 July 2013 | Shah Alam Stadium | K. Rajagopal | Chelsea | 1–4 (L) |
Question:
Who was the head coach when the opponent was Arsenal?
Answer:
K. Rajagopal