Read the following article and answer the question by choosing from the options.

His heart grew weary at the thought . It was a new reaction to a painful memory . Vader wondered if this was how Obi - Wan had felt when they fought on Mustafar . Anakin promptly buried the thought as he took control of the battle ; he did n't really want to know .

Who might Obi - Wan be to him ?
[i] Foe. [ii] None of the above choices .. [iii] Subordinate. [iv] Stranger....A:
[i]