Which of the Following Implies That Public Insurance Programs May

Which of the following implies that public insurance programs may not improve health insurance coverage?

A) Many of those eligible for the public insurance already had private insurance.
B) Few of those eligible for the public insurance already had private insurance.
C) Some but not all of the people who did not have insurance and are eligible for public insurance will enroll in the program.
D) Those who have health insurance are more likely to seek medical treatment.