Is each pixel covered with a single, individual color filter (for example, green filter), and then the true color of each pixel is calculated through interpolation of the neighbour pixels?

Or is each pixel covered with a color filter array (for example, each pixel is covered with 9 individual color filters) and then the true color of the pixel is calculated from these 9 filters? Without interpolation from neighbouring pixels.

 

I figured it out. The first case is true.