what is the right answer ,in java , full explanation please , thank you

a) x b) z c) xyz d) zyx 8) If you have a parent class Animal that has a method speak() which returns: Awk. Cat has a speak method that returns: Meow. Bird does not have a speak method. Dog has a speak method that returns: Woof. Fish does not have a speak method. Cow has a speak method that returns: Moo. What is the output from looping through the array a created below and asking each element to speak()? Animal [] a ={ new Cat(), new Cow(), new Dog(), new Fis new Bird()} a) Meow Moo Woof Awk Awk b) Awk Awk Awk Awk Awk c) This will not compile d) This will have runtime errors e) Meow Moo Woof Glug Awk