Q: In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.
Question: The number 0.0670 has: 
 Options:  <0> 5 significant figures. <1> 4 significant figures. <2> 3 significant figures. <3> 2 significant figures. <4> 1 significant figure.
A:
chemistry