Direction: Study carefully the following arrangement of letters and digits and answer questions 15 and 16. N P D F A I G L O 4 K W C R N 9 X U Q F J 7 H S T Y 6 If starting from F every 4th element is replaced with the successive names of the days of the week starting with Sunday, what will be the position of Thursday from your right?

• A.  19th
• B.         16th
• C.  8th        
• D.         9th