A generic class is defined _____ on the class definition line. by inserting an identifier between left and right parentheses by inserting the keyword generic before the class definition by removing the type from the heading of the class by inserting an identifier between left and right brackets Use the _____ keyword to mark a class so that it can be used only as the base class from which other classes can be derived. base scaled interface abstract Which of the following declares an ArrayList object and invokes its constructor? ArrayList a(); ArrayList a = new ArrayList(); ArrayList [] a = new ArrayList; ArrayList [] a = new ArrayList [10]; One way to write reusable code is to use the object data type for instance data members. Doing so then requires _____ moving the data type into a predefined type casting and unboxing the data type using a stack to store the items creating generic classes string [, ] name = new string [3, 3] {{"Kelechi", "Ifeoma", "Mike"}, {"Rob", "Andy", "John"}, {"Jake", "Abosede", "Aaron"}}; Looking above w hat does name(0, 1] refer to? Kelechi Rob Ifeoma Andy