Why Does So Much Plastic Waste End Up in the North

Why does so much plastic waste end up in the North Pacific Ocean Gyre?

A) Ocean currents travelling in difference directions pass each other and create a vortex which traps any plastic floating on the currents.
B) The main current from China, the world's largest producer of plastic, dumps out into the North Pacific Ocean Gyre.
C) All global currents meet here so any plastic that makes its way into the ocean will be trapped here.
D) There are many large container boating accidents in the vicinity.Most plastic waste in the ocean comes from container ships.