A county receives \($10,000,000\) from a private foundation. The foundation requires that the county maintain the principal of this endowment, and income from its investment must be used to maintain county parks. The county reports activities related to this endowment in a permanent fund. During the year, the county invests the \($10,000,000\), earns investment income of \($300,000\), and spends \($280,000\) on park maintenance. At year- end, how does the permanent fund report fund balance?

a. Nonspendable \($10,000,000\) and restricted $20,000

b. Restricted \($10,000,000\) and committed \($20,000\)

c. Restricted \($10,000,000\) and assigned $20,000

d. Nonspendable \($10,000,000\) and assigned $20,000