Which of the following is a best practice to measure time taken by a process for execution?

Which of the following is a best practice to measure time taken by a

1.	Which of the following is a best practice to measure time taken by a process for execution?
A.	System.currentTimeMillis()
B.	System.nanoTime()
C.	System.getCurrentTime()
D.	System.getProcessingTime()
Answer» C. System.getCurrentTime()