The diagram below shows some ocean floor features. Picture shows the following features of the ocean floor. Continent: the landmass surface where the water from the ocean meets at the shoreline, Continental Shelf: the edge of a continent where the water is relatively shallow, Continental Slope: a sharp drop in depth where the ocean basin truly begins and the continental crust ends, Volcanic Island Arc: a line of volcanic islands caused by subduction and the melting of either oceanic or continental crust, Abyss: the deepest portions of the ocean basin, excluding ocean trenches, Mid-Ocean Ridge: the location where sea floor spreading occurs, Abyssal Plain: a large, flat, and deep portion of the ocean surrounding either side of a mid ocean ridge, Guyot: a large, flat-topped, underwater volcano, Ocean Trench: an extremely deep portion of the ocean, similar to a canyon, formed during subduction, Seamount: an underwater mountain. The mid-ocean ridge is labeled as A.

Which of these statements is correct about the feature labeled A in the diagram?
Question 1 options:

It is a deep trench located on both sides of a mid-ocean ridge.

It is an underwater basin caused by subduction.

It is an area where sea floor spreading occurs.

It is the portion of the ocean floor where old crusts are eroded.