Which of the Following Python Concepts Are Demonstrated Directly or Indirectly

Multiple Choice

Which of the following Python concepts are demonstrated directly or indirectly by the following code: In [1]: x = 7
Out[1]: int
In [2]: type(x)
Out[2]: int
In [3]: x = 4.1
In [4]: type(x)
Out[4]: float
In [5]: x = 'dog'
In [6]: type(x)
Out[6]: str

A) Python uses xe "dynamic:typing"dynamic typing-it determines the type of the object a variable refers to while executing your code.
B) Over its lifetime a variable can be bound to different objects, even objects of different types.
C) Python creates objects in memory and removes them from memory as necessary. This removal process-called garbage collection-helps ensure that memory is available for new objects you create.
D) All of the above.