And Polly's heart was beating rapidly because she did know the answer, she had worked late and had gone to bed determined to rise early in the morning and tackle the problem again. What does tackle the problem mean as it is used in the passage?
A. Polly charged toward a solution to the question.
B. Polly brought gear to help solve the question.
C. Polly continued to work on a difficult question.
D. Polly kept others from solving the question.