Based on the table of quarterly travel expenses below, which department had the lowest expenses in Q3?
| Department | Q1 | Q2 | Q3 | Q4 |
|---|---|---|---|---|
| Sales | $5,200 | $6,100 | $5,500 | $5,800 |
| Marketing | $3,000 | $3,500 | $2,800 | $4,000 |
| Admin | $1,500 | $1,200 | $1,800 | $1,400 |
| Tech | $4,500 | $4,800 | $4,200 | $4,900 |
