How many pairs of letters are there in the word "CHAIRS" which have as many letters between them in the word as in the English alphabet?

Name: CREST Olympiads
Address: Office No. 234, Spaze iTech Park, Tower-B2, 2nd Floor, Sohna - Gurgaon Rd, Sector 49, Gurgaon, 122018, IN
Telephone: +91-98182-94134

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A None
B One
C Two
D Three