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(Choose 1 answer)
What is the 4 steps problem solving process of Polya?
A. Understand the problem, analyze the problem, devise a plan, carry out a plan
B. Analyze the problem, devise a plan, carry out the plan and look back what you have done
C. Understand the problem, devise a plan, carry out a plan, and look back what you have do
D. Understand the problem, analyze the problem, carry out a plan, look back what you have
