Metal Gear Solid is an action-adventure stealth video game produced by Konami Computer Entertainment Japan and released for the PlayStation in 1998. The game was directed, produced, and co-written by series creator Hideo Kojima, and serves as a sequel to the MSX2 video games "Metal Gear" and "", which Kojima also wrote and directed.

Can we draw the following conclusion?
Metal Gear Solid is a sequel to Metal Gear.

Options are: a). Yes; b). It's impossible to say; c). No;
a).