The Myers-Briggs Type Indicator Suggests That an Extrovert's Energy Is

The Myers-Briggs Type Indicator suggests that an extrovert's energy is drawn from their local environment. What is the best explanation of this?

A) They direct their energy outwards but gain energy from reflecting upon own thoughts and concepts. Their preference is likely to be communicating and working own ideas by reflecting and become bored if not able to find inspiration from their surroundings.
B) They may be sociable but outgoing with a wide range of interests. They are often expressive and become bored if not able to find inspiration from their surroundings.
C) They direct their energy inwards and gain energy from reflecting on thoughts and concepts. Their preference is likely to be communicating with others in writing and working on ideas by reflecting.
D) They may be unsociable and outgoing with few interests. They are often expressive but never bored when unable to find inspiration from their surroundings.