Table:
|  |  | Year Ended February 28, |  |
| --- | --- | --- | --- |
|  | 2019 | 2018 | 2017 |
| Cost of revenues | $723 | $653 | $374 |
| Research and development | 2,061 | 1,471 | 1,033 |
| Selling and marketing | 2,863 | 2,314 | 1,655 |
| General and administrative | 5,382 | 4,860 | 4,771 |
|  | $11,029 | $9,298 | $7,833 |
Paragraphs:
Stock-based compensation expense is included in the following captions of the consolidated statements of comprehensive income (loss) (in thousands): Stock-based compensation expense is included in the following captions of the consolidated statements of comprehensive income (loss) (in thousands):
As of February 28, 2019, there was $25.5 million of unrecognized stock-based compensation cost related to non-vested equity awards, which is expected to be recognized over a weighted-average remaining vesting period of 2.8 years.
Question:
What was the change in Selling and marketing between 2018 and 2019?
Answer: (2863-2314) = 549