Objective: How long should the dimensions of the wood be to build an easy cleaning guinea pig cage?

Which of the following solutions is more sound in terms of naive physics reasoning?

Choose your answer from:
* You need 1x2 pine, 1x4 pine, and 1x8 plywood to build a guinea pig cage.;
* You should use wood and pine that are a couple of feet long for the guinea pig cage;
You need 1x2 pine, 1x4 pine, and 1x8 plywood to build a guinea pig cage.