How many pairs of letters are there in the word 'SCHEDULE' which have as many letters between them in the word as in the alphabet? MCQ with Answer and Explanation

S-C-H-E-D-U-L-E. Pairs: C and E (one letter H between, in alphabet D between? No. D and E consecutive. E and L? Looking carefully: S and U have T between in alphabet and H E D between in word no. Standard for SCHEDULE: pairs are C-E, D-E, E-L? C to E: positions in word 2 and 4, one letter between; in alphabet C D E one between. Yes. Another is D and L? Perhaps two pairs: CE and DE (consecutive in both).