The acid test ratio does NOT include

A. cash
B. accounts receivable
C. supplies
D. inventory

http://www.investopedia.com/terms/a/acidtest.asp

c. supplies

The acid test ratio, also known as the quick ratio, is a financial ratio that measures a company's ability to pay off its short-term liabilities without relying on the sale of its inventory. It is calculated by dividing the sum of liquid assets (assets that can quickly be converted into cash) by current liabilities.

In this case, the acid test ratio does not include inventory. This means that option D, inventory, is the correct answer.

To determine the acid test ratio, you need to identify the liquid assets that will be included. Liquid assets typically include cash, accounts receivable, and short-term investments that can quickly be converted to cash. However, the ratio excludes inventory and other assets that may not be easily converted into cash within a short period.

Therefore, the answer is D. inventory.