⟩ Which of the following regular expression can be used to identify date(s) present in the text object “The next meetup on data science will be held on 2017-09-21, previously it happened on 31/03, 2016” A) d{4}-d{2}-d{2} B) (19|20)d{2}-(0[1-9]|1[0-2])-[0-2][1-9] C) (19|20)d{2}-(0[1-9]|1[0-2])-([0-2][1-9]|3[0-1]) D) None of the above