GivenafileGrizzlyBear.java：<br /> 1.package animals.mammals；<br /> 2.<br /> 3.public class GrizzlyBear extends Bear{<br /> 4.voidhunt（）{<br /> 5.Salmons=findSalmon（）；<br /> 6.s.consume（）；<br /> 7.}<br /> 8.}<br /> and another file，Salmon.java：<br /> 1.packageanimals.fish；<br /> 2.<br /> 3.public class Salmon extends Fish{<br /> 4.voidconsume（）{/*dostuff*/}<br /> 5.}<br /> Assume both classes are defined in the correct directories for theft packages，and that the Mammal class correctly defines the findSalmon（）method.Which two changes allow this code to compile correctly？（）