Which one of the following is an application of Stack

Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.

G _ I _ K G H I _ K _ _ _ J K

Select the option that represents the letters that, when placed from left to right in the following blanks, will complete the letter-series.

Select the combination of letter when placed sequentially in the blanks of the given series will complete the series.

Select the correct combination of the letters that when sequentially placed in the blanks of the given letter series will complete the series.

Select the number combination of letters that when placed sequentially in the blanks of the given series will complete the series.

Select the correct combination of the letters that when sequentially placed in the blanks of the given letter series will complete the series.

Select the correct combination of the letters that when sequentially placed in the blanks of the given letter series will complete the series.

Select the combination of numbers that when placed sequentially in the blanks of the given series will complete the series.

Select the number combination of letters that when placed sequentially in the blanks of the given series will complete the series.