ILL BRAINLIST U N MARK U 5 STAR BET?!! I just need to know if Chernobyl and nuclear accidents mean the same thing I'm so confused I think I lost my braincells trying to figure it out does it or does it not give an example

Two changes are described below. a green banana turns yellow and ripens. a layer of rust forms on an iron nail. which statement is true about the two changes? a) both are chemical changes because new substances are formed. b) both are physical changes because only the physical state of the substances change. c) a is a physical change due to a change of state, but b is a chemical change because new molecules are formed. d) a is a chemical change due to a change of state, but b is a physical change because new molecules are formed.