There are three types of strain, depending on the response of rocks to stress. With the increase of stress, the corresponding strain is:
a. Elastic strain, Plastic strain, and Fracture
b. Ductile strain, Plastic strain, and Fracture
c. Elastic strain, Brittle strain, and Plastic strain
d. None of the above
Answer: a. Elastic strain, Plastic strain, and Fracture
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