Given the following definitions char *message = "Programming in Objective-C is fun"; char message2[] = "You said it"; int x = 100; determine whether each NSLog call from the following sets is valid...

Given the following definitions char *message = "Programming in Objective-C is fun"; char message2[] = "You said it"; int x = 100; determine whether each NSLog call from the following sets is valid and produces the same output as other calls from the set. /*** set 1 ***/ NSLog (@"Programming in Objective-C is fun"); NSLog (@"%s", "Programming in Objective-C is fun"); NSLog (@"%s", message); /*** set 2 ***/ NSLog (@"You said it"); NSLog (@"%s", message2); NSLog (@"%s", &message2[0]); /*** set 3 ***/ NSLog (@"said it"); NSLog (@"%s", message2 + 4); NSLog (@"%s", &message2[4]);