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Making spaghetti sauce with her grandmother, Isabella goes to the cellar to get a jar of canned tomatoes from last summer. When she opens the jar of tomatoes, she hears a ‘pop!’ Startled, Isabella looks at her grandmother to see if she did something wrong. Isabella’s grandmother tells her that the ‘pop’ means the tomatoes are still good. If the jar hadn’t made that sound, what would this MOST likely indicate?

A.
The jar had not been heated enough to kill microorganisms.

B.
The jar’s lid had not created a vacuum seal to keep out microorganisms.

C.
The tomatoes had not completely fermented while stored in the jar.

D.
Salt or sugar had been left out of the mixture during canning.