Question 5 Are reference issues possible with the "double" type? O No - ints are protected at compile time from being changed. Yes - addresses are themselves integers so they act as pass by reference variables. No - it is a primitive type and is stored directly a o Because only recursive algorithms cho repeat forever. Question 6 5 P What is the difference between an ADT and a class in Java? Classes are much more efficient D ADTS cannot be instanced like classes D ADTs have extra focus on abstraction, classes are only supported by Java, Hot ADTS