What Must Be Done When Vaccines Are Stored in a Refrigerator

What must be done when vaccines are stored in a refrigerator?

A) The ideal temperature for refrigerated vaccines is 10 $\degree$ F to 36 $\degree$ F.
B) Store vaccines on the top shelf and door.
C) Food must be placed below the vaccines.
D) Make sure the door is closed.
E) All of the above