A company has determined that its Recovery Time Objective (RTO) for critical systems is two hours. In order to facilitate a timely resumption of critical applications, the company should consider:

The generic method

``` public static void displayArray(E[] array) { for (E element : array) System.out.println(element); } ``` can be passed A) an array whose element type is Object B) an array whose element type is E C) an array whose element type is any superclass of Number D) an array whose element type is Integer

Which statement best describes the relationship between superclass and subclass types?

a. A subclass reference cannot be assigned to a superclass variable and a superclass reference cannot be assigned to a subclass variable. b. A subclass reference can be assigned to a superclass variable and a superclass reference can be assigned to a subclass variable. c. A superclass reference can be assigned to a subclass variable, but a subclass reference cannot be assigned to a superclass variable. d. A subclass reference can be assigned to a superclass variable, but a superclass reference cannot be assigned to a subclass variable.