Consider the following important sources of tax revenue of the Central Government - 1 - Corporation tax 2 - Tax on income other than corporation tax 3 - Custom tax 4 - Union excise duty Which one of the following is the correct descending order of them in terms of gross tax revenue is like -

• A. 1, 2, 4, 3
• B. 1, 2, 3, 4
• C. 3, 1, 2, 4
• D. 2, 3, 1, 4