Madonna and Sean are divorcing. The agree to submit their dispute to Judy for nonbinding arbitration. After, neither agree with Judy's decision. Which of the following is true?

a. They may pursue their claims in court because arbitration violates their rights under the due process clause of the US Constitution.

b. They must abide by Judy's decision because they agreed that she would arbitrate.

c. They must abide by Judy's decision because they agreed that they would when they signed the contract to arbitrate.

d. They may pursue their claims in court through litigation.