Which theme of A Christmas Carol can be heard in the words of Marley's ghost when he says that "charity, mercy, forbearance, benevolence, were all my business.
a. One must be willing to forgive one's former business partners for their failings.
b. Everyone should give all of their money to charity.
c. The purpose of life is to help others and treat them well.
d. There is a time and place for all thoughts and feelings.