19. The company was founded four decades ago; in other words, it has been in operation for ____.
(A) 40 years
(B) 40 months
(C) 80 years
(D) 80 months
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統計: A(2935), B(160), C(163), D(43), E(0) #2702702
統計: A(2935), B(160), C(163), D(43), E(0) #2702702