I am about to install engineering flooring for my living room. At first, I plan to start based on wall A (the longest wall, please see image below). However, there is a projection (or indentation, depending on your view). If I continue to start based on wall A (which means planks will parallel to wall A), shall my first row start from Wall A & Wall C (where wall A meets wall C) , or shall it start from the the corner of the window projection/indentation (where wall A meets window).
Or alternatively, shall I star based on wall B or wall C?