Which of the Following Is a Difference Between Concentration Techniques

Which of the following is a difference between concentration techniques and mind­fulness meditation?

A) Unlike concentration techniques, mind­fulness meditation focuses on improving the skill of switching one's attention from task to task.
B) Unlike concentration techniques, mind­fulness meditation focuses to improve concurrent, or parallel, task perfor­mance.
C) Unlike concentration techniques, mind­fulness meditation encourages the retention of permanent memories and experiences.
D) Unlike concentration techniques, mind­fulness meditation encourages attention to the details of momentary experience.