Which of the following is NOT true about $$SAaction$?$

Group of answer choices

A $$SAaction$$ can have a scheduling priority.

The 'worst$-$case completion time' property of a $$SAaction$$ specifies the overall time taken to execute the action, including overheads.

The 'blocking time' property of a $$SAaction$$ specifies the length of time that this action is blocked waiting for resources.

The 'laxity' property of a $$SAaction$$ specifies the maximum length of time that this action can be delayed.