176. What is the purpose of the email?
(A) To request payment for a conference
(B) To confirm registration details
(C) To cancel a workshop reservation
(D) To invite a speaker to present
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統計: A(2), B(59), C(1), D(0), E(0) #3804734
統計: A(2), B(59), C(1), D(0), E(0) #3804734