Table:
| Fiscal Year |  |  | Variance in |  |
| --- | --- | --- | --- | --- |
|  | 2019 | 2018 | Dollars | Percent |
| (In millions, except for percentages) |  |  |  |  |
| Sales and marketing | $1,493 | $1,593 | $(100) | (6)% |
| Research and development | 913 | 956 | (43) | (4)% |
| General and administrative | 447 | 574 | (127) | (22)% |
| Amortization of intangible assets | 207 | 220 | (13) | (6)% |
| Restructuring, transition and other costs | 241 | 410 | (169) | (41)% |
| Total | $3,301 | $3,753 | $(452) | (12)% |
Paragraphs:
Operating expenses
Sales and marketing expense decreased primarily due to a $51 million decrease in stock-based compensation expense and a $41 million decrease as a result of the divestiture of our WSS and PKI solutions.
Research and development expense decreased primarily due to a $66 million decrease in stockbased compensation expense.
General and administrative expense decreased primarily due to a $130 million decrease in stock-based compensation expense.
Amortization of intangible assets decreased primarily due to the intangible assets sold with the divestiture of WSS and PKI solutions.
Restructuring, transition and other costs reflect a decrease of $70 million in fiscal 2019 compared to fiscal 2018 in severance and other restructuring costs. In addition, fiscal 2018 costs included $88 million of transition related costs related to our fiscal 2018 divestiture of our WSS and PKI solutions compared to $3 million in fiscal 2019.
Question:
Why did Amortization of intangible assets decrease primarily due to?
Answer: intangible assets sold with the divestiture of WSS and PKI solutions