Arrange the following events of exocytosis in the correct sequence:
(1) vesicle membrane fuses with plasma membrane
(2) secretory vesicles migrate to plasma membrane
(3) vesicle contents are expelled from cell
(4) secretions accumulate within secretory vesicles
A. 1, 4, 2, 3
B. 2, 1, 4, 3
C. 1, 2, 3, 4
D. 4, 2, 1, 3
E. 3, 1, 4, 2
D
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