The effect on the accounting equation from using supplies which had been previously recorded as an asset is that the assets will decrease and the owner's equity will decrease too.
- The assets are the resources that the company has. The owner's equity refers to the proportion from the total value of the asset of a company that the owner can claim.
- Since the supply was recorded before as an asset, then the asset will reduce and the owner's equity reduces as well.
In conclusion, the correct option is C.
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