The city of Cobb has two trust funds for the benefit of the city's library, trust fund A and trust fund B. Only the earnings from trust fund A can be expended and both the principal and interest from trust fund B can be expended. How should the city of Cobb report each trust fund? Trust fund A Trust fund B Trust fund A Permanent Trust fund B Special revenue Trust fund A Special revenue Trust fund B Special revenue Trust fund A Permanent Trust fund B Permanent Trust fund A Special revenue Trust fund B Permanent