Which of the following statements is TRUE for degree of

Which of the following statements is TRUE for degree of disturbance of collected soil sample?

1. Thinner the sampler wall, lower the degree of disturbance of collected soil sample
2. Thicker the sampler wall, lower the degree of disturbance of collected soil sample
3. Thickness of the sampler wall and the degree of disturbance of collected soil sample are unrelated
4. The degree of disturbance of collected soil sample is proportional to the inner diameter of the sampling tube.

When the thickness of sampler wall is less, the degree of disturbance of collected sample is lower.