Assertion: Certain accounting conventions are followed while preparing financial statements
Reasoning: The use of accounting conventions makes financial statements comparable, simple and realistic.

Both Assertion (A) and reasoning (R) are correct and R is the correct explanation of A.

Accounting Conventions: Certain accounting conventions are followed while preparing financial statements. The convention of valuing inventory at cost or market price, whichever is lower, is followed. The valuing of assets at cost less depreciation principle for balance sheet purposes is followed. The convention of materiality is followed in dealing with small items like pencils, pens, postage stamps, etc. These items are treated as expenditure in the year in which they are purchased even though they are assets in nature. The stationery is valued at cost and not on the principle of cost or market price, whichever is less. The use of accounting conventions makes financial statements comparable, simple and realistic.