Is the following code correct?

NSRect a = NSMakeRect(0, 1, 2, 3) + NSMakeRect(0, 1, 2, 3);

Is the following code correct? NSMutableArray *a = [NSMutableArray array]; // do something with a [a release];

Is the following code correct? NSMutableArray *a = [[NSMutableArray new] autorelease]; // do something with a [a release];

Is the following code correct? NSMutableArray *a = [NSMutableArray new]; // do something with a [a release];

Which of the following is a valid Uniform Type Identifier?

______ is the root class for most classes in the Objective-C class hierarchy.

_______ is Cocoa's integrated development environment (IDE).

What is protocol?

A ________ is a list of information read by applications while they are launching.

__________ is NOT one of the Cocoa Objective-C object libraries.