Consider the following class definitions.
public class Thing
{ /* implementation not shown */ }
public class MoreThing extends Thing
{ /* implementation not shown */ }
The following code segment appears in a class other than Thing or MoreThing.
Thing[] arr = new MoreThing[3]; // line 1
Thing t1 = new Thing();
Thing t2 = new MoreThing(); // line 3
MoreThing t3 = new MoreThing();
arr[0] = t1; // line 5
arr[1] = t2; // line 6
arr[2] = t3; // line 7
Which of the following best explains the error in the code segment?
A. Line 1 will cause an error because the type used to declare arr and the type used to instantiate arr are different.
B. Line 3 will cause an error because the type used to declare t2 and the type used to instantiate t2 are different.
C. Line 5 will cause an error because the types of arr[0] and t1 are different.
D. Line 6 will cause an error because the types of arr[1] and t2 are different.
E. Line 7 will cause an error because the types of arr[2] and t3 are different.
