In each set below, select the letter of the group in which all the words are spelled correctly. In which group are all of the words spelled correctly?

A) experience, faculty, reccomendation
B) unifying, metrapolitan, remarkeable
C) critically, swiftly, purest

The other options contain at least one misspelled word. Option A has "reccomendation" instead of "recommendation" and option B has "metrapolitan" instead of "metropolitan" and "remarkeable" instead of "remarkable". Option C is the only group with all words spelled correctly.