In the given series starting from D, if every alternate element is deleted, then which of the following element will be second to the left of the element which is 7th from your left?
N P D S A I G L O 4 K W C R N 9 X U Q F J 7 H S T Y 6
A L
B 4
C R
D 9
can any one tell me the answer and also explain please