How many pairs of letter are there in the word 'BUCKET' which have as many letters between

How many pairs of letter are there in the word 'BUCKET' which have as many letters between them in the word as in the alphabet ?

A. One

B. Two

C. Three

D. Four

E. More than four

Answer: A . One

Justification:

Letters in the word	Letters in the alphabet
C K E	C D E