Answer:
d. It would increase liabilities by $600
Explanation:
Supplies are part of inventory, and when inventory is purchased it increases assets.
But is it purchased against cash then there is no change as assets in the form of cash is reduced by same.
Further, if these are purchased on credit then the balance of liabilities increases as the increase in liabilities and increase in assets keep the balance sheet equation matching.
Thus, purchasing on credit will increase the liabilities.