The correct choice is:
A. third-person limited; the narrator only knows what one character is feeling.
This can be determined from the passage, as it primarily focuses on the feelings and thoughts of the son ("the son felt hampered, patronized and his pent-up fury rolled through him") while providing only limited insight into the feelings of the old man. Therefore, it indicates a third-person limited perspective, where the narrator conveys the internal state of only one character (the son) rather than all characters.