What sentence best describes exocytosis?

Which sentence best describes exocytosis? A. a vesicle fuses to a lysosome and its contents are destroyed B. a vesicle fuses to the cell membrane and its contents enter the cell C. a vesicle fuses to the cell membrane and its contents leave the cell D. a vesicle fuses to the nuclear envelope and its contents enter the nucleus?

Exocytosis is the durable, energy-consuming process by which a cell directs the contents of secretory vesicles out of the cell membrane into the extracellular space.