HH123 is a corporation, organized and operating with an educational purpose. Assets are less than $500,000 and gross receipts are between $50,000 and $150,000. They have filed Form 1023 and are waiting for the IRS determination. While their application is pending, which annual return should be filed?

Form 990-EZ. Form 1041. Form 1120. No return is required while the application is pending