Based on the following sentence, Jing interpreted the word enigma to mean a mystery In order to show that he was worthy, Oedipus was forced to solve an enigma from a sphinx before he could enter into the city of Corinth.
Which dictionary entry BEST verifies Jing's initial understanding of the word enigma?
O A enigma: noun a German-built enciphering machine developed for commercial use.
O B. enigma: noun a perplexing speech or text; a riddle.
O C. enigma: noun an inexplicable occurrence or situation.
OD. enigma: noun a person of puzzling or contradictory character.