Aconstruction company plans to build a certain number of apartment buildings and stores on a piece of land. this ppc shows the combination of projects it can build. if the amount of land available to the company increases, the ppc will . a) shift the left b) shift to the right c) remain unchanged the company realizes it cannot construct any buildings on a portion of the land because it is at risk of a cave-in. in this case, the ppc will . a) shift to the left b) shift to the right c) remain unchanged