What Is the Purpose of Public Financing of Qualifying Candidates

What is the purpose of public financing of qualifying candidates?

A) to ensure that no private money is used during the campaign process
B) to reduce the potential for corruption in relationships between donors and elected officials
C) to prevent private candidates from spending private money that has not been disclosed
D) to increase spending on campaigns and thereby increase voter interest
E) to ensure that all campaign expenditure limits are met by limiting funding