Question: after an object is created with new when will its...

After an object is created with new, when will its memory be deallocated ?

a. The garbage collector will free the memory when the object is not used (i.e. referenced) anymore.

b. When the garbage collector calls finalize() on the object reference to free its memory.
c. The memory will be freed when the object reference goes out of scope.
d. The programmer has to call delete on the object's reference to free its memory.