When using a 3- compartment sink, which of the following should you do to ensure items are properly sanitized:

a. Wash items in the third sink, which should be filled with warm, soapy water.
b. Make sure the sanitizing solution is at the correct concentration by using test strips
c. When washing items that do not fit in the sink, it is acceptable to rotate them to clean all parts of the item
d. Remove all debris in the first sink which should be filled with clean water