Happy Munch Candy Co. sold sugary sweets and confections for the last 50 years. In recent years, however, the company has incurred substantial operating losses due to the public's increasing awareness of the dangers of sugar overconsumption. With its assets now exceeding its liabilities, Happy Munch filed a petition of reorganization under Chapter 11 of the federal Bankruptcy Code. Which of the following statements is correct?

a. The U.S. trustee will usually appoint the seven largest unsecured creditors to the creditors' committee.
b. The court must appoint a trustee to manage Happy Munch's business affairs.
c. Happy Munch must cease all business operations immediately.
d. The creditors' committee must select a trustee to manage Happy Munch's affairs.