Which internal control methodology provided below would be the best solution to resolve the following problem? ABC Company was a small business. The accountant in the business did all the accounting work. The business only needed one person to do all the accounting work. a. 1.Establishment of responsibility b. 2-Segregation of duties c. 3-Documentation procedures do all the accounting work. a. 1.Establishment of responsibility b. 2-Segregation of duties C. 3-Documentation procedures d. 4- Physical and IT controls e. 5-Independent checks of performa f. 6-Human resource controls