Assessee has option to follow different methods of accounting for different sources of income under Business Income

ACIT vs. Mehul J. Somaiya, ITA No. 7118/Mum/2007, Bench – B, A.Y. 2002–03, dt. 10-
12-2008 – BCAJ p. 670, Vol. 40-B, Part 5, February 2009