A new raw material sampler has been trained to use a sampling booth. Which action demonstrates that further training on proper hygiene practices is necessary? Select all that apply.

Group of answer choices

The sampler doesnt wear gloves before entering the booth.

Some RM drums have a visible dust on the lids.

The sampler closes RM drums without using mallet

The sampler uses a scoop to sample one material, wipes it clean with the alcohol wipe and then uses it to sample second material.