Step 1: Sources of data for Cash Flow Statement.
- From Balance Sheet: To find changes in assets and liabilities.
- From Profit & Loss A/c: To calculate net profit and adjustments.
- From Additional Information: For non-cash transactions, dividend paid, tax paid, etc.
Step 2: Conclude.
Since all three sources are required, the answer is “All of these”.
Final Answer:
\[
\boxed{\text{All of these}}
\]