64. Algorithms flagged insider‑trading risk when current stock purchases mirrored a prior__________ of trades before the last earnings leak.
(A) prelude
(B) prologue
(C) antecedent
(D) subsequence
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統計: A(7), B(6), C(10), D(20), E(0) #3463156
統計: A(7), B(6), C(10), D(20), E(0) #3463156