Which of the following answers shows the four problem-solving steps in the correct order?

a. understand the problem; gather your resources; check your answer and present the solution; come to an answer.

b. understand the problem; gather your resources; come to an answer; check your answer and present the solution.

c. understand the problem; come to an answer; gather your resources; check your answer and present the solution.

d. gather your resources; understand the problem; come to an answer; check your answer and present the solution.