Multi-choice problem: Choose from the options at the end, and answer how do you do this: How to create a door for a cabinet?

Choose your answer from: A. Cut the required sized sheet off wood or the metallic material you prefer, fix the knob on the front of the door and fix it to the cabinet using clamps.; B. Cut the required sized sheet off wood or the metallic material you prefer, fix the knob on the back of the door and fix it to the cabinet using clamps.;
A.