32. Exocytosis contributes to both secretion and plasma membrane homeostasis. Which of the following statements is correct regarding exocytosis?

(1) Constitutive exocytosis occurs in all eukaryotic cells and does not require a specific sorting signal in cargo proteins.

(2) Regulated exocytosis depends on Ca2+-triggered membrane fusion events.

(3) SNARE proteins provide specificity and energy for vesicle fusion by forming trans-SNARE complexes.
(A) (1) only.
(B) (2) only.
(C) (1) and (3).
(D) (2) and (3).
(E) All of the above are correct.