Which of the following is not an example of an issue left unresolved by PPACA?

a. There is no guarantee the distribution of health insurance will be 100% equitable.

b. The standard package of "essential benefits" has not yet been precisely defined by the law, and is still left for individual states to determine

c. The law will greatly reduce, but not completely eliminate the number of uninsured.

d. The law does not provide a clear mechanism for medium-size employers to access affordable health insurance.