Which correction should be made to sentence 9?

— ExhibitC

— Exhibit -

Sentence 9:It’s important to keep the refrigerators temperature at 39 degrees and to refrigerate hot foods within two hours of cooking.

Which correction should be made to sentence 9?
A . replace It’s with Its
B . change keep to kept
C . replace refrigerators with refrigerator’s
D . insert a comma after refrigerate
E . insert a comma after hours

Answer: C