Refer to the exhibit.
A FortiSlEM administrator wants to group some attributes for a report, but is not able to do so successfully.
As shown in the exhibit, why are some of the fields highlighted in red?
A . The Event Receive Time attribute is not available for logs.
B . The attribute COUNT(Matched event) is an invalid expression.
C . Unique attributes cannot be grouped.
D . No RAW Event Log attribute is available for devices.
Answer: C