Which precaution should you take when you see this symbol?

A. do not look directly at the experiment

B. watch the teacher carefully and follow what he or she does

C.wear goggles if you are doing the experiment

D. wear goggles if you are performing or observing the experiment

Which precaution should you take when you see this symbol A do not look directly at the experiment B watch the teacher carefully and follow what he or she does class=