All of the Following Are Guidelines for Storing Specimens and Testing

All of the following are guidelines for storing specimens and testing components in a laboratory refrigerator except:

A) Attach a biohazard warning label to the refrigerator.
B) Maintain the refrigerator temperature between 36 $\degree$ F (2.2 $\degree$ C) and 46 $\degree$ F (7.8 $\degree$ C) .
C) Check the temperature of the refrigerator once each week.
D) Do not store food in the refrigerator.