GRE Text Completion: Manhatton-GRE填空Manhatton - LL158SWFO3LNP1YT=

The etymologies of the words alpha and omega couldn't be more different; the former is obscure – the original symbol for alpha was an ox's head, and an ox is 'alp in Phoenician – while the latter is ____________, as omega simply means "big O." A. transparent B. complicated C. overt D. erudite E. abstruse F. scholarly