How many such pairs of letters are there in the word DAUGHTER (in both forward and backward directions) which have as many letters between them in the word as there are in the English alphabetical order?

Correct option is A

Solution:

The alphabets are positioned as in the following order: 

In forward direction: “DG”, “DH”, “GH” and
In backward direction: “RT”
Hence, there are four pairs of letter in “DAUGHTER” as according to English alphabetical series.