You happen to be visiting northem california and you are driving by suisun bay, a notorious graveyard for old ships you notice that all of these ships appear to be nusting may which of the following statements is true?

a. the rusting of the metal is neither a chemical change nor a physical change
b. the rusting of the metal is a chemical change
c. the rusting of the metal is both a chemical change and a physical change
d. the rusting of the metal is a physical change