Which is not true regarding glass, paint and fibers as trace evidence, Singapore

Question 1.9

Which is not true regarding glass, paint and fibres as trace evidence?

1. They are small in dimension when and after transfer.
2. They exhibit class characteristics.
3. They transfer when surfaces of objects contact each other.
4. They persist for a long period of time after transfer.
5. They can be easily disturbed and are prone to contamination.