I think you are missing a piece of information in your problem. What is the length of the carpet remnant? This would help us finalize the answer.
However, I think we can piece together an answer. I would select the final choice, because we are adding together a group of 3 and a group of 2. The group with 3 is the larger length, so it makes sense that this is also the largest area. I assumed that the width of each remnant is the same.
